Table of contents for issues of Communications of the Association for Computing Machinery

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Volume 3, Number 12, December, 1960
Volume 22, Number 11, November, 1979
Volume 1, Number 1, January, 1954
Volume 1, Number 2, April, 1954
Volume 1, Number 3, July, 1954
Volume 1, Number 4, October, 1954
Volume 2, Number 1, January, 1955
Volume 2, Number 2, April, 1955
Volume 2, Number 3, July, 1955
Volume 2, Number 4, October, 1955
Volume 3, Number 1, January, 1956
Volume 3, Number 2, April, 1956
Volume 3, Number 3, July, 1956
Volume 3, Number 4, October, 1956
Volume 4, Number 1, January, 1957
Volume 4, Number 2, April, 1957
Volume 4, Number 3, July, 1957
Volume 4, Number 4, October, 1957
Volume 5, Number 1, January, 1958
Volume 5, Number 2, April, 1958
Volume 5, Number 3, July, 1958
Volume 5, Number 4, October, 1958
Volume 6, Number 1, January, 1959
Volume 6, Number 2, April, 1959
Volume 6, Number 3, July, 1959
Volume 6, Number 4, October, 1959
Volume 7, Number 1, January, 1960
Volume 7, Number 2, April, 1960
Volume 7, Number 3, July, 1960
Volume 7, Number 4, October, 1960
Volume 7, Number 2, April, 1960
Volume 8, Number 1, January, 1961
Volume 8, Number 2, April, 1961
Volume 8, Number 3, July, 1961
Volume 8, Number 4, October, 1961
Volume 9, Number 1, January, 1962
Volume 9, Number 2, April, 1962
Volume 9, Number 3, July, 1962
Volume 9, Number 4, October, 1962
Volume 10, 1963
Volume 10, Number 1, January, 1963
Volume 10, Number 2, April, 1963
Volume 10, Number 3, July, 1963
Volume 10, Number 4, October, 1963
Volume 11, Number 1, January, 1964
Volume 11, Number 2, April, 1964
Volume 11, Number 3, July, 1964
Volume 11, Number 4, October, 1964
Volume 12, Number 1, January, 1965
Volume 12, Number 2, April, 1965
Volume 12, Number 3, July, 1965
Volume 12, Number 4, October, 1965
Volume 13, Number 1, January, 1966
Volume 13, Number 2, April, 1966
Volume 13, Number 3, July, 1966
Volume 13, Number 4, October, 1966
Volume 14, Number 1, January, 1967
Volume 14, Number 2, April, 1967
Volume 14, Number 3, July, 1967
Volume 14, Number 4, October, 1967
Volume 15, Number 1, January, 1968
Volume 15, Number 2, April, 1968
Volume 15, Number 3, July, 1968
Volume 15, Number 4, October, 1968
Volume 16, Number 1, January, 1969
Volume 16, Number 2, April, 1969
Volume 16, Number 3, July, 1969
Volume 16, Number 4, October, 1969
Volume 17, Number 1, January, 1970
Volume 17, Number 2, April, 1970
Volume 17, Number 3, July, 1970
Volume 17, Number 4, October, 1970
Volume 18, Number 1, January, 1971
Volume 18, Number 2, April, 1971
Volume 18, Number 3, July, 1971
Volume 18, Number 4, October, 1971
Volume 19, Number 1, January, 1972
Volume 19, Number 2, April, 1972
Volume 19, Number 3, July, 1972
Volume 19, Number 4, October, 1972
Volume 20, Number 1, January, 1973
Volume 20, Number 2, April, 1973
Volume 20, Number 3, July, 1973
Volume 20, Number 4, October, 1973
Volume 21, Number 1, January, 1974
Volume 21, Number 2, April, 1974
Volume 21, Number 3, July, 1974
Volume 21, Number 4, October, 1974
Volume 22, Number 1, January, 1975
Volume 22, Number 2, April, 1975
Volume 22, Number 3, July, 1975
Volume 22, Number 4, October, 1975
Volume 23, Number 1, January, 1976
Volume 23, Number 2, April, 1976
Volume 23, Number 3, July, 1976
Volume 23, Number 4, October, 1976
Volume 24, Number 1, January, 1977
Volume 24, Number 2, April, 1977
Volume 24, Number 3, July, 1977
Volume 24, Number 4, October, 1977
Volume 25, Number 1, January, 1978
Volume 25, Number 2, April, 1978
Volume 25, Number 3, July, 1978
Volume 25, Number 4, October, 1978
Volume 26, Number 4, October, 1978
Volume 26, Number 1, January, 1979
Volume 26, Number 2, April, 1979
Volume 26, Number 3, July, 1979
Volume 26, Number 4, October, 1979
Volume 27, Number 1, January, 1980
Volume 27, Number 2, April, 1980
Volume 27, Number 3, July, 1980
Volume 27, Number 4, October, 1980
Volume 28, Number 1, January, 1981
Volume 28, Number 2, April, 1981
Volume 28, Number 3, July, 1981
Volume 28, Number 4, October, 1981
Volume 29, Number 1, January, 1982
Volume 29, Number 2, April, 1982
Volume 29, Number 3, July, 1982
Volume 29, Number 4, October, 1982
Volume 30, Number 1, January, 1983
Volume 30, Number 2, April, 1983
Volume 30, Number 3, July, 1983
Volume 30, Number 4, October, 1983
Volume 31, Number 1, January, 1984
Volume 31, Number 2, April, 1984
Volume 31, Number 3, July, 1984
Volume 31, Number 4, October, 1984
Volume 32, Number 1, January, 1985
Volume 32, Number 2, April, 1985
Volume 32, Number 3, July, 1985
Volume 32, Number 4, October, 1985
Volume 33, Number 1, January, 1986
Volume 33, Number 2, April, 1986
Volume 33, Number 3, July, 1986
Volume 33, Number 4, October, 1986
Volume 34, Number 1, January, 1987
Volume 34, Number 2, April, 1987
Volume 34, Number 3, July, 1987
Volume 34, Number 4, October, 1987
Volume 35, Number 1, January, 1988
Volume 35, Number 2, April, 1988
Volume 35, Number 3, July, 1988
Volume 35, Number 4, October, 1988
Volume 36, Number 1, January, 1989
Volume 36, Number 2, April, 1989
Volume 36, Number 3, July, 1989
Volume 36, Number 4, October, 1989
Volume 37, Number 1, January, 1990
Volume 37, Number 2, April, 1990
Volume 37, Number 3, July, 1990
Volume 37, Number 4, October, 1990
Volume 38, Number 1, January, 1991
Volume 38, Number 2, April, 1991
Volume 38, Number 3, July, 1991
Volume 38, Number 4, October, 1991
Volume 39, Number 1, January, 1992
Volume 39, Number 2, April, 1992
Volume 39, Number 3, July, 1992
Volume 39, Number 4, October, 1992
Volume 40, Number 1, January, 1993
Volume 40, Number 2, April, 1993
Volume 40, Number 3, July, 1993
Volume 40, Number 4, September, 1993
Volume 40, Number 5, November, 1993
Volume 41, Number 1, January, 1994
Volume 41, Number 2, March, 1994
Volume 41, Number 3, May, 1994
Volume 41, Number 4, July, 1994
Volume 41, Number 5, September, 1994
Volume 41, Number 6, November, 1994
Volume 42, Number 1, January, 1995
Volume 42, Number 2, March, 1995
Volume 42, Number 3, May, 1995
Volume 42, Number 4, July, 1995
Volume 42, Number 5, September, 1995
Volume 42, Number 6, November, 1995
Volume 43, Number 1, January, 1996
Volume 43, Number 2, March, 1996
Volume 43, Number 3, May, 1996
Volume 43, Number 4, July, 1996
Volume 43, Number 5, September, 1996
Volume 43, Number 6, November, 1996
Volume 44, Number 1, January, 1997
Volume 44, Number 2, March, 1997
Volume 44, Number 3, May, 1997
Volume 44, Number 4, July, 1997
Volume 44, Number 5, September, 1997
Volume 44, Number 6, November, 1997
Volume 45, Number 1, January, 1998
Volume 45, Number 2, March, 1998
Volume 45, Number 3, May, 1998
Volume 45, Number 4, July, 1998
Volume 45, Number 5, September, 1998
Volume 45, Number 6, November, 1998
Volume 46, Number 1, January, 1999
Volume 46, Number 2, March, 1999
Volume 46, Number 3, March, 1999
Volume 46, Number 4, July, 1999
Volume 46, Number 5, September, 1999
Volume 46, Number 6, November, 1999
Volume 47, Number 1, January, 2000
Volume 47, Number 2, March, 2000
Volume 47, Number 3, May, 2000
Volume 47, Number 4, July, 2000
Volume 47, Number 5, 2000
Volume 47, Number 6, 2000
Volume 48, Number 1, January, 2001
Volume 48, Number 2, March, 2001
Volume 48, Number 3, May, 2001
Volume 48, Number 4, July, 2001
Volume 48, Number 5, September, 2001
Volume 48, Number 6, November, 2001
Volume 49, Number 1, January, 2002
Volume 49, Number 2, March, 2002
Volume 49, Number 3, May, 2002
Volume 49, Number 4, July, 2002
Volume 49, Number 5, September, 2002
Volume 49, Number 6, November, 2002
Volume 50, Number 1, January, 2003
Volume 50, Number 2, March, 2003
Volume 50, Number 3, May, 2003
Volume 50, Number 4, July, 2003
Volume 50, Number 5, September, 2003
Volume 50, Number 6, November, 2003
Volume 51, Number 1, January, 2004
Volume 51, Number 2, March, 2004
Volume 51, Number 3, May, 2004
Volume 51, Number 4, July, 2004
Volume 51, Number 5, September, 2004
Volume 51, Number 6, November, 2004
Volume 52, Number 1, January, 2005
Volume 52, Number 2, March, 2005
Volume 52, Number 3, May, 2005
Volume 52, Number 4, July, 2005
Volume 52, Number 5, September, 2005
Volume 52, Number 6, November, 2005
Volume 53, Number 1, January, 2006
Volume 53, Number 2, March, 2006
Volume 53, Number 3, May, 2006
Volume 53, Number 4, July, 2006
Volume 53, Number 5, September, 2006
Volume 53, Number 6, November, 2006
Volume 54, Number 1, March, 2007
Volume 54, Number 2, April, 2007
Volume 54, Number 3, June, 2007
Volume 54, Number 4, July, 2007
Volume 54, Number 5, October, 2007
Volume 54, Number 6, December, 2007
Volume 55, Number 1, February, 2008
Volume 55, Number 2, May, 2008
Volume 55, Number 3, July, 2008
Volume 55, Number 4, September, 2008
Volume 55, Number 5, October, 2008
Volume 55, Number 6, December, 2008
Volume 56, Number 1, January, 2009
Volume 56, Number 2, April, 2009
Volume 56, Number 3, May, 2009
Volume 56, Number 4, June, 2009
Volume 56, Number 5, August, 2009
Volume 56, Number 6, September, 2009
Volume 4, Number 3, July, 1982


Communications of the Association for Computing Machinery
Volume 3, Number 12, December, 1960

                   Paolo Ercoli   Letters to the Editor: Errors Due to
                                  Overflow in Arithmetic Operations  . . . A9--A9


Communications of the Association for Computing Machinery
Volume 22, Number 11, November, 1979

        Robert Endre Tarjan and   
            Andrew Chi-Chih Yao   Storing a Sparse Table . . . . . . . . . 606--611


Journal of the ACM
Volume 1, Number 1, January, 1954

                 S. B. Williams   The Association for Computing Machinery  1--3
                   J. W. Backus   The IBM 701 Speedcoding System . . . . . 4--6
                  R. T. Wiseman   Life Insurance Premium Billing and
                                  Combined Operations by Electronic
                                  Equipment  . . . . . . . . . . . . . . . 7--12
             F. E. Hamilton and   
                    E. C. Kubie   The IBM Magnetic Drum Calculator Type
                                  650  . . . . . . . . . . . . . . . . . . 13--20
                 H. Jacobs, Jr.   Equipment Reliability as Applied to
                                  Analogue Computers . . . . . . . . . . . 21--26
                  C. M. Edwards   Survey of Analog Multiplication Schemes  27--35
                Richmond Perley   Automatic Strain-Gage and Thermocouple
                                  Recording on Punched Cards . . . . . . . 36--43
                      Anonymous   News and Notices . . . . . . . . . . . . 44--44
                  A. J. Neumann   Supplement: ONR Digital Computer
                                  Newsletter . . . . . . . . . . . . . . . 45--55

Journal of the ACM
Volume 1, Number 2, April, 1954

                 Alan L. Leiner   System Specifications for the DYSEAC . . 57--81
                 Paul Brock and   
                     Sybil Rock   Problems in Acceptance Testing in
                                  Digital Computers  . . . . . . . . . . . 82--87
                   Jack Moshman   The Generation of Pseudo-Random Numbers
                                  on a Decimal Calculator  . . . . . . . . 88--91
                      Anonymous   News and Notices . . . . . . . . . . . . 92--92
                  A. J. Neumann   Supplement: ONR Digital Computer
                                  Newsletter . . . . . . . . . . . . . . . 93--100

Journal of the ACM
Volume 1, Number 3, July, 1954

                 Stefan Bergman   A Method of Solving Boundary Value
                                  Problems of Mathematical Physics on
                                  Punch Card Machines  . . . . . . . . . . 101--104
                    A. D. Wasel   A Method of Determining Plate Bending by
                                  Use of a Punched-Card Machine  . . . . . 105--110
            Stephen H. Crandall   Numerical Treatment of a Fourth Order
                                  Parabolic Partial Differential Equation  111--117
                Calvin C. Elgot   On Single vs. Triple Address Computing
                                  Machines . . . . . . . . . . . . . . . . 118--123
                  C. C. Gotlieb   Running a Computer Efficiently . . . . . 124--127
                 Louis B. Wadel   An Electronic Differential Analyzer as a
                                  Difference Analyzer  . . . . . . . . . . 128--136
                      Anonymous   News and Notices . . . . . . . . . . . . 137--138
                  A. J. Neumann   Supplement: ONR Digital Computer
                                  Newsletter . . . . . . . . . . . . . . . 139--148

Journal of the ACM
Volume 1, Number 4, October, 1954

                C. J. Bashe and   
                W. Buchholz and   
                   N. Rochester   The IBM Type 702 . . . . . . . . . . . . 149--169
              Susie E. Atta and   
                Ward C. Sangren   Calculation of Generalized
                                  Hypergeometric Series  . . . . . . . . . 170--172
              George F. Trexler   Public Utility Customer Accounting on
                                  the Type 650 Magnetic Drum Data
                                  Processing Machine . . . . . . . . . . . 173--176
            Walter F. Bauer and   
               John W. Carr III   On the Demonstration of High-Speed
                                  Digital Computers  . . . . . . . . . . . 177--182
               Philip Davis and   
              Philip Rabinowitz   A Multiple Purpose Orthonormalizing Code
                                  and Its Uses . . . . . . . . . . . . . . 183--191
                      Anonymous   News and Notices . . . . . . . . . . . . 192--192
                  A. J. Neumann   Supplement: ONR Digital Computer
                                  Newsletter . . . . . . . . . . . . . . . 193--200


Journal of the ACM
Volume 2, Number 1, January, 1955

              Heinz Rutishauser   Some Programming Techniques for the
                                  ERMETH . . . . . . . . . . . . . . . . . 1--4
                H. J. Gray, Jr.   Propagation of Truncation Errors in the
                                  Numerical Solution of Ordinary
                                  Differential Equations by Repeated
                                  Closures . . . . . . . . . . . . . . . . 6--17
                    C. K. Titus   A General Card-Program for the
                                  Evaluation of the Inverse Laplace
                                  Transform  . . . . . . . . . . . . . . . 18--27
          Benjamin F. Logan and   
            George R. Welti and   
             George C. Sponsler   Analogue Study of Electron Trajectories  28--41
            Stephen H. Crandall   Implicit vs. Explicit Recurrence
                                  Formulas for the Linear Diffusion
                                  Equation . . . . . . . . . . . . . . . . 42--49
                      Anonymous   News and Notices . . . . . . . . . . . . 50--52
                  A. J. Neumann   Supplement: ONR Digital Computer
                                  Newsletter . . . . . . . . . . . . . . . 53--60

Journal of the ACM
Volume 2, Number 2, April, 1955

                   F. J. Murray   Mechanisms and Robots  . . . . . . . . . 61--82
               George J. Moshos   Analog Interpolator for Automatic
                                  Control  . . . . . . . . . . . . . . . . 83--91
               Howard Hamer and   
              Jerome D. Kennedy   Testing of Operational Amplifiers  . . . 92--94
               Edward P. Graney   Maintenance and Acceptance Tests Used on
                                  the MIDAC  . . . . . . . . . . . . . . . 95--98
                  Herschel Weil   Reduction of Runs in Multiparameter
                                  Computations . . . . . . . . . . . . . . 99--110
                    Harvey Cohn   Some Experiments in Ideal Factorization
                                  on the MIDAC . . . . . . . . . . . . . . 111--116
                      Anonymous   News and Notices . . . . . . . . . . . . 117--118
                  A. J. Neumann   Supplement: ONR Digital Computer
                                  Newsletter . . . . . . . . . . . . . . . 119--136

Journal of the ACM
Volume 2, Number 3, July, 1955

                 David M. Young   ORDVAC Solutions of the Dirichlet
                                  Problem  . . . . . . . . . . . . . . . . 137--161
          Milton Abramowitz and   
              William F. Cahill   On the Vibration of a Square Clamped
                                  Plate  . . . . . . . . . . . . . . . . . 162--168
             Charles F. Pulvari   Memory Matrix Using Ferroelectric
                                  Condensers as Bistable Elements  . . . . 169--185
                Morris Rubinoff   Digital Computers for Real-Time
                                  Simulation . . . . . . . . . . . . . . . 186--204
             Frances L. Parsons   A Simple Desk-Calculator Method for
                                  Checking Binary Results of Digital
                                  Computer Arithmetic Operations . . . . . 205--207
                      Anonymous   News and Notices . . . . . . . . . . . . 208--210
                  A. J. Neumann   Supplement: ONR Digital Computer
                                  Newsletter . . . . . . . . . . . . . . . 211--228

Journal of the ACM
Volume 2, Number 4, October, 1955

                Carl G. Blanyer   Precision Modulators and Demodulators    229--242
              J. N. P. Hume and   
            Beatrice H. Worsley   Transcode: A System of Automatic Coding
                                  for FERUT  . . . . . . . . . . . . . . . 243--252
               T. P. Gorman and   
                R. G. Kelly and   
                    R. B. Reddy   Automatic Coding for the IBM 701 . . . . 253--261
                Nathaniel Macon   On the Computation of Exponential and
                                  Hyperbolic Functions Using Continued
                                  Fractions  . . . . . . . . . . . . . . . 262--266
              V. S. Haneman and   
                  J. W. Senders   Correlation Computation on Analog
                                  Devices  . . . . . . . . . . . . . . . . 267--279
                      Anonymous   News and Notices . . . . . . . . . . . . 280--282
                  A. J. Neumann   Supplement: ONR Digital Computer
                                  Newsletter . . . . . . . . . . . . . . . 283--298


Journal of the ACM
Volume 3, Number 1, January, 1956

          Alston S. Householder   Presidential Address to the ACM,
                                  Philadelphia, September 14, 1955 . . . . 1--2
                   Barry Gordon   An Optimizing Program for the IBM 650    3--5
                  Peter Henrici   A Subroutine for Computations with
                                  Rational Numbers . . . . . . . . . . . . 6--9
                  Peter Henrici   Automatic Computations with Power Series 10--15
                 Louis B. Wadel   Simulation of Digital Filters on an
                                  Electronic Analog Computer . . . . . . . 16--21
                S. D. Conte and   
                   R. F. Reeves   A Kutta Third-Order Procedure for
                                  Solving Differential Equations Requiring
                                  Minimal Storage  . . . . . . . . . . . . 22--25
                Robert L. Young   Report on Experiments in Approximating
                                  the Solution of a Differential Equation  26--28
                    R. H. Stark   Rates of Convergence in Numerical
                                  Solution of the Diffusion Equation . . . 29--40
                      Anonymous   News and Notices . . . . . . . . . . . . 41--43
                      Anonymous   Digital Computer Newsletter  . . . . . . 44--64

Journal of the ACM
Volume 3, Number 2, April, 1956

                 Robert Perkins   EASIAC, A Pseudo-Computer  . . . . . . . 65--72
               J. M. Hammersley   Conditional Monte Carlo  . . . . . . . . 73--76
              Herbert T. Glantz   A Note on Microprogramming . . . . . . . 77--84
          Alston S. Householder   Bibliography on Numerical Analysis . . . 85--100
          William R. Hoover and   
              John J. Wedel and   
               Joseph R. Bruman   Wind Tunnel Data Reduction Using
                                  Paper-Tape Storage Media . . . . . . . . 101--109
                      Anonymous   News and Notices . . . . . . . . . . . . 110--111
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 112--113
                      Anonymous   Digital Computer Newsletter  . . . . . . 114--128

Journal of the ACM
Volume 3, Number 3, July, 1956

                  S. A. Lebedev   The High-Speed Electronic Calculating
                                  Machine of the Academy of Sciences of
                                  the U.S.S.R. . . . . . . . . . . . . . . 129--133
            Edward Harry Friend   Sorting on Electronic Computer Systems   134--168
                E. J. Isaac and   
                R. C. Singleton   Sorting by Address Calculation . . . . . 169--174
          Robert H. Bracken and   
              Bruce G. Oldfield   A General System for Handling Alphameric
                                  Information on the IBM 701 Computer  . . 175--180
                Walter F. Bauer   An Integrated Computation System for the
                                  ERA-1103 . . . . . . . . . . . . . . . . 181--185
               L. E. Heizer and   
                  S. J. Abraham   Transfer Function Simulation by Means of
                                  Amplifiers and Potentiometers  . . . . . 186--198
            Nathaniel Macon and   
            Margaret Baskervill   On the Generation of Errors in the
                                  Digital Evaluation of Continued
                                  Fractions  . . . . . . . . . . . . . . . 199--202
         A. C. Downing, Jr. and   
              A. S. Householder   Some Inverse Characteristic Value
                                  Problems . . . . . . . . . . . . . . . . 203--207
                    Mark Lotkin   A Note on the Midpoint Method of
                                  Integration  . . . . . . . . . . . . . . 208--211
                Glenn H. Keitel   An Extension of Milne's Three-Point
                                  Method . . . . . . . . . . . . . . . . . 212--222
        Richard Elton von Holdt   An Iterative Procedure for the
                                  Calculation of the Eigenvalues and
                                  Eigenvectors of a Real Symmetric Matrix  223--238
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 239--239
                      Anonymous   News and Notices . . . . . . . . . . . . 240--243
                      Anonymous   Digital Computer Newsletter  . . . . . . 244--263

Journal of the ACM
Volume 3, Number 4, October, 1956

                      Anonymous   Editor's Note  . . . . . . . . . . . . . 265--265
               Wesley S. Melahn   A Description of a Cooperative Venture
                                  in the Production of an Automatic Coding
                                  System . . . . . . . . . . . . . . . . . 266--271
               Charles L. Baker   The PACT I Coding System for the IBM
                                  Type 701 . . . . . . . . . . . . . . . . 272--278
                   Owen R. Mock   Logical Organization of the PACT I
                                  Compiler . . . . . . . . . . . . . . . . 279--287
      Robert C. Miller, Jr. and   
              Bruce G. Oldfield   Producing Computer Instructions for the
                                  PACT I Compiler  . . . . . . . . . . . . 288--291
              Gus Hempstead and   
              Jules I. Schwartz   PACT Loop Expansion  . . . . . . . . . . 292--298
                 J. I. Derr and   
                     R. C. Luke   Semi-Automatic Allocation of Data
                                  Storage for PACT I . . . . . . . . . . . 299--308
            I. D. Greenwald and   
                   H. G. Martin   Conclusions After Using the PACT I
                                  Advanced Coding Technique  . . . . . . . 309--313
          Alston S. Householder   On the Convergence of Matrix Iterations  314--324
              Michael E. Fisher   Higher Order Differences in the Analogue
                                  Solution of Partial Differential
                                  Equations  . . . . . . . . . . . . . . . 325--347
                J. H. Brown and   
           John W. Carr III and   
               Boyd Larrowe and   
               J. R. McReynolds   Prevention of Propagation of Machine
                                  Error in Long Problems . . . . . . . . . 348--354
                Robert M. Mason   The Digital Approximation of Contours    355--359
             Richard C. Jeffrey   Arithmetical Analysis of Digital
                                  Computing Nets . . . . . . . . . . . . . 360--375
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 376--378
                      Anonymous   News and Notices . . . . . . . . . . . . 379--382
                      Anonymous   Digital Computer Newsletter  . . . . . . 383--403


Journal of the ACM
Volume 4, Number 1, January, 1957

          Alston S. Householder   Retiring Presidential Address  . . . . . 1--4
               John W. Carr III   Inaugural Presidential Address . . . . . 5--7
               T. B. Steel, Jr.   Pact IA  . . . . . . . . . . . . . . . . 8--11
            Walter F. Bauer and   
                 George P. West   A System for General-Purpose
                                  Analog-Digital Computation . . . . . . . 12--17
                    S. D. Conte   A Stable Implicit Finite Difference
                                  Approximation to a Fourth Order
                                  Parabolic Equation . . . . . . . . . . . 18--23
                 Yudell L. Luke   Rational Approximations to the
                                  Exponential Function . . . . . . . . . . 24--29
                   A. Shenitzer   Chebyshev Approximation of a Continuous
                                  Function by a Class of Functions . . . . 30--35
                  Susie E. Atta   Effect of Propagated Error on Inverse of
                                  Hilbert Matrix . . . . . . . . . . . . . 36--40
                   D. H. Lehmer   Sorting Cards with Respect to a Modulus  41--46
               David A. Huffman   The Design and Use of Hazard-Free
                                  Switching Networks . . . . . . . . . . . 47--62
                       Hao Wang   A Variant to Turing's Theory of
                                  Computing Machines . . . . . . . . . . . 63--92
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 93--94
                      F. L. Alt   News and Notices . . . . . . . . . . . . 95--96
            Gordon D. Goldstein   Digital Computer Newsletter  . . . . . . 97--120

Journal of the ACM
Volume 4, Number 2, April, 1957

                J. H. Chung and   
                  C. C. Gotlieb   Test of an Inventory Control System on
                                  FERUT  . . . . . . . . . . . . . . . . . 121--130
              R. H. Bracken and   
                  H. E. Tillitt   Information Searching with the 701
                                  Calculator . . . . . . . . . . . . . . . 131--136
              Francis H. Harlow   Hydrodynamic Problems Involving Large
                                  Fluid Distortions  . . . . . . . . . . . 137--142
               Gene H. Leichner   Designing Computer Circuits With a
                                  Computer . . . . . . . . . . . . . . . . 143--147
                  James A. Ward   The Down-Hill Method of Solving $f(z) =
                                  0$ . . . . . . . . . . . . . . . . . . . 148--150
                   F. Yates and   
                      S. Lipton   An Automatic Programming Routine for the
                                  Elliott 401  . . . . . . . . . . . . . . 151--156
               Robert J. Mercer   Micro-Programming  . . . . . . . . . . . 157--171
               Charles J. Swift   Machine Features for a More Automatic
                                  Monitoring System on Digital Computers   172--173
                  J. Kister and   
                   P. Stein and   
                    S. Ulam and   
                  W. Walden and   
                       M. Wells   Experiments in Chess . . . . . . . . . . 174--177
              Herbert T. Glantz   On the Recognition of Information With a
                                  Digital Computer . . . . . . . . . . . . 178--188
                 William Miehle   Burroughs Truth Function Evaluator . . . 189--192
            Arthur W. Burks and   
                       Hao Wang   The Logic of Automata, Part I  . . . . . 193--218
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 219--220
                      F. L. Alt   News and Notices . . . . . . . . . . . . 221--224
            Gordon D. Goldstein   Digital Computer Newsletter  . . . . . . 225--244

Journal of the ACM
Volume 4, Number 3, July, 1957

           Anthony G. Oettinger   Account Identification for Automatic
                                  Data Processing  . . . . . . . . . . . . 245--253
                      Saul Gorn   Standardized Programming Methods and
                                  Universal Coding . . . . . . . . . . . . 254--273
                      S. Lipton   Two Programming Techniques for
                                  One-Plus-One Address Computers . . . . . 274--278
            Arthur W. Burks and   
                       Hao Wang   The Logic of Automata, Part II . . . . . 279--297
                 Wallace Givens   The Characteristic Value-Vector Problem  298--307
              Paul S. Dwyer and   
              Bernard A. Galler   The Method of Reduced Matrices for a
                                  General Transportation Problem . . . . . 308--313
           Gene Thomas Thompson   On Bateman's Method for Solving Linear
                                  Integral Equations . . . . . . . . . . . 314--328
               J. H. Halton and   
                 D. C. Hanscomb   A Method of Increasing the Efficiency of
                                  Monte Carlo Integration  . . . . . . . . 329--340
         Allen A. Goldstein and   
              Norman Levine and   
             James B. Hereshoff   On the ``Best'' and ``Least ${Q}$th''
                                  Approximation of an Overdetermined
                                  System of Linear Equations . . . . . . . 341--347
                    T. C. Rowan   Psychological Tests and Selection of
                                  Computer Programmers . . . . . . . . . . 348--353
                David R. Israel   Simulation Techniques for the Test and
                                  Evaluation of Real-Time Computer
                                  Programs . . . . . . . . . . . . . . . . 354--361
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 362--366
                      F. L. Alt   News and Notices . . . . . . . . . . . . 367--370
            Gordon D. Goldstein   Digital Computer Newsletter  . . . . . . 371--391

Journal of the ACM
Volume 4, Number 4, October, 1957

       Theodore J. Williams and   
          R. Curtis Johnson and   
                    Arthur Rose   Computations in the Field of Engineering
                                  Chemistry  . . . . . . . . . . . . . . . 393--419
              A. Weinberger and   
                    H. Loberman   Symbolic Designations for Electrical
                                  Connections  . . . . . . . . . . . . . . 420--427
                H. Loberman and   
                  A. Weinberger   Formal Procedures for Connecting
                                  Terminals with a Minimum Total Wire
                                  Length . . . . . . . . . . . . . . . . . 428--437
               R. T. Nelson and   
                  J. R. Jackson   SWAC Computations for Some $m \times n$
                                  Scheduling Problems  . . . . . . . . . . 438--441
                Roger L. Boyell   Programmed Multiplication on the IBM 407 442--449
               Paolo Ercoli and   
                  Roberto Vacca   Errors Due to Overflow in Arithmetic
                                  Operations Particularly as Regards FINAC
                                  Electronic Computer  . . . . . . . . . . 450--455
                Nathaniel Macon   Condensation and Look-Up Procedures for
                                  Double Entry Tables  . . . . . . . . . . 456--458
              David A. Pope and   
                    C. Tompkins   Maximizing Functions of
                                  Rotations---Experiments Concerning Speed
                                  of Diagonalization of Symmetric Matrices
                                  Using Jacobi's Method  . . . . . . . . . 459--466
            Stephen H. Crandall   Optimum Recurrence Formulas for a Fourth
                                  Order Parabolic Partial Differential
                                  Equation . . . . . . . . . . . . . . . . 467--471
                Bernard Sherman   Determination of Three Percentiles of
                                  the $\omega_n$ Distribution Function . . 472--476
            C. L. Gerberich and   
                  W. C. Sangren   Codes for the Classical Membrane Problem 477--486
              Robert C. Minnick   Tshebysheff Approximations for Power
                                  Series . . . . . . . . . . . . . . . . . 487--504
                Emma Lehmer and   
                 H. S. Vandiver   On the Computation of the Number of
                                  Solutions of Certain Trinomial
                                  Congruences  . . . . . . . . . . . . . . 505--510
        IU. IA. Bazilevsk\t\i\i   The Universal Electronic Digital Machine
                                  (URAL) for Engineering Research  . . . . 511--519
                      Anonymous   Conference on Matrix Computations  . . . 520--523
              R. E. Cordray and   
                Robert M. Mason   Remarks on a Recent Paper:
                                  ``Arithmetical Analysis of Digital
                                  Computing Nets'' . . . . . . . . . . . . 524--529
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 530--533
                      F. L. Alt   News and Notices . . . . . . . . . . . . 534--540
            Gordon D. Goldstein   Digital Computer Newsletter  . . . . . . 541--558


Journal of the ACM
Volume 5, Number 1, January, 1958

                 A. F. R. Brown   Language Translation . . . . . . . . . . 1--8
              Marcia Ascher and   
             George E. Forsythe   SWAC Experiments on the Use of
                                  Orthogonal Polynomials for Data Fitting  9--21
               A. Spitzbart and   
                    D. L. Shell   A Chebycheff Fitting Criterion . . . . . 22--31
                Pentti Laasonen   On the Truncation Error of Discrete
                                  Approximations to the Solutions of
                                  Dirichlet Problems in a Domain with
                                  Corners  . . . . . . . . . . . . . . . . 32--38
               John W. Carr III   Error Bounds for the Runge-Kutta
                                  Single-Step Integration Process  . . . . 39--44
                 J. N. Franklin   On the Numerical Solution of
                                  Characteristic Equations in Flutter
                                  Analysis . . . . . . . . . . . . . . . . 45--51
                  T. R. Bashkow   A ``Curve Plotting'' Routine for the
                                  Inverse Laplace Transform of Rational
                                  Functions  . . . . . . . . . . . . . . . 52--56
                    A. E. Scott   Automatic Preparation of Flow Chart
                                  Listings . . . . . . . . . . . . . . . . 57--66
               Edwin Hirschhorn   Simplification of a Class of Boolean
                                  Functions  . . . . . . . . . . . . . . . 67--75
                  D. M. Baumann   A High-Scanning-Rate Storage Device for
                                  Computer Applications  . . . . . . . . . 76--88
          Serge J. Zaroodny and   
                  Tadeusz Leser   AYDAR, Special Purpose Analog Machine
                                  for Yaw Data Reduction . . . . . . . . . 89--99
                 Wallace Givens   Conference on Matrix Computations  . . . 100--115
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 116--116
                      Anonymous   Announcement . . . . . . . . . . . . . . 117--117

Journal of the ACM
Volume 5, Number 2, April, 1958

         Leendeert de Witte and   
            Kenneth P. Fournier   Evaluation of Integrals Involving
                                  Combinations of Bessel Functions and
                                  Circular Functions . . . . . . . . . . . 119--126
               Robert L. Causey   On Some Error Bounds of Givens . . . . . 127--131
                 Jack B. Dennis   A High-Speed Computer Technique for the
                                  Transportation Problem . . . . . . . . . 132--153
                Werner L. Frank   Finding Zeros of Arbitrary Functions . . 154--160
                  L. W. Ehrlich   A Numerical Method of Solving a Heat
                                  Flow Problem with Moving Boundary  . . . 161--176
                George N. Raney   Sequential Functions . . . . . . . . . . 177--180
             Irving M. Copi and   
            Calvin C. Elgot and   
                Jesse B. Wright   Realization of Events by Logical Nets    181--196
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 197--203

Journal of the ACM
Volume 5, Number 3, July, 1958

              A. S. Householder   The Approximate Solution of Matrix
                                  Problems . . . . . . . . . . . . . . . . 205--243
 George G. den Broeder, Jr. and   
                 Harry J. Smith   A Property of Semi-Definite Hermitian
                                  Matrices . . . . . . . . . . . . . . . . 244--245
                    F. L. Bauer   On Modern Matrix Iteration Processes of
                                  Bernoulli and Graeffe Type . . . . . . . 246--257
                     R. W. Cole   A Note on Numerical Solution of Certain
                                  Linear Boundary Value Problems . . . . . 258--260
               Eve Bofinger and   
                 V. J. Bofinger   On a Periodic Property of Pseudo-Random
                                  Sequences  . . . . . . . . . . . . . . . 261--265
               Seymour Ginsburg   On the Length of the Smallest Uniform
                                  Experiment Which Distinguishes the
                                  Terminal States of a Machine . . . . . . 266--280
                        F. Lesh   Methods of Simulating a Differential
                                  Analyzer on a Digital Computer . . . . . 281--288
              N. R. Goodman and   
                        S. Katz   Calculating Open Loop Transfer Functions
                                  from Closed Loop Measurements  . . . . . 289--297
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 298--308

Journal of the ACM
Volume 5, Number 4, October, 1958

                 Harley Tillitt   Computer Programming for Young Students  309--318
             Sherman Blumenthal   A Dual Master File System for a Tape
                                  Processing Computer  . . . . . . . . . . 319--327
                  L. N. Korolev   Coding and Code Compression  . . . . . . 328--330
                   A. A. Markov   On the Inversion Complexity of a System
                                  of Functions . . . . . . . . . . . . . . 331--334
          Alston S. Householder   Generated Error in Rotational
                                  Tridiagonalization . . . . . . . . . . . 335--338
          Alston S. Householder   Unitary Triangularization of a
                                  Nonsymmetric Matrix  . . . . . . . . . . 339--342
                   Jack Moshman   The Application of Sequential Estimation
                                  to Computer Simulation and Monte Carlo
                                  Procedures . . . . . . . . . . . . . . . 343--352
                    J. Certaine   On Sequences of Pseudo-Random Numbers of
                                  Maximal Length . . . . . . . . . . . . . 353--356
              Michael E. Fisher   Proposed Methods for the Analog Solution
                                  of Fredholm's Integral Equation  . . . . 357--369
                Pentti Laasonen   On the Solution of Poisson's Difference
                                  Equation . . . . . . . . . . . . . . . . 370--382
               Martin F. Berman   A Method for Transposing a Matrix  . . . 383--384
             Frederick H. Young   Analysis of Shift Register Counters  . . 385--388
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 389--396
                      Anonymous   Author Index, 1954--1958 . . . . . . . . 397--403


Journal of the ACM
Volume 6, Number 1, January, 1959

                    W. C. McGee   Generalization: Key to Successful
                                  Electronic Data Processing . . . . . . . 1--23
              Michael Zarechnak   Three Levels of Linguistic Analysis in
                                  Machine Translation  . . . . . . . . . . 24--32
              Richard D. Eldred   Test Routines Based on Symbolic Logical
                                  Statements . . . . . . . . . . . . . . . 33--36
                  R. W. Hamming   Stable Predictor-Corrector Methods for
                                  Ordinary Differential Equations  . . . . 37--47
               Jim Douglas, Jr.   Round-Off Error in the Numerical
                                  Solution of the Heat Equation  . . . . . 48--58
            H. H. Goldstine and   
               F. J. Murray and   
                 J. von Neumann   The Jacobi Method for Real Symmetric
                                  Matrices . . . . . . . . . . . . . . . . 59--96
                    G. N. Lance   Solution of Algebraic and Transcendental
                                  Equations on an Automatic Digital
                                  Computer . . . . . . . . . . . . . . . . 97--101
                   Shu-T'ien Li   Origin and Development of the Chinese
                                  Abacus . . . . . . . . . . . . . . . . . 102--110
       René de Vogelaere   Remarks on the Paper ``Tchebysheff
                                  Approximations for Power Series''  . . . 111--114
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 115--120

Journal of the ACM
Volume 6, Number 2, April, 1959

            Walter F. Bauer and   
           Mario L. Juncosa and   
                 Alan J. Perlis   ACM Publications Policies and Plans  . . 121--122
                Donald L. Shell   The SHARE 709 System: A Cooperative
                                  Effort . . . . . . . . . . . . . . . . . 123--127
         Irwin D. Greenwald and   
                   Maureen Kane   The SHARE 709 System: Programming and
                                  Modification . . . . . . . . . . . . . . 128--133
                E. M. Boehm and   
               T. B. Steel, Jr.   The SHARE 709 System: Machine
                                  Implementation of Symbolic Programming   134--140
           Vincent J. DiGri and   
                   Jane E. King   The SHARE 709 System: Input-Output
                                  Translation  . . . . . . . . . . . . . . 141--144
                  Owen Mock and   
               Charles J. Swift   The SHARE 709 System: Programmed
                                  Input-Output Buffering . . . . . . . . . 145--151
             Harvey Bratman and   
              Ira V. Boldt, Jr.   The SHARE 709 System: Supervisory
                                  Control  . . . . . . . . . . . . . . . . 152--155
           Paul Hildebrandt and   
                  Harold Isbitz   Radix Exchange---An Internal Sorting
                                  Method for Digital Computers . . . . . . 156--163
           Rosalind B. Marimont   A New Method for Checking the
                                  Consistency of Precedence Matrices . . . 164--171
             Gertrud S. Joachim   Memory Efficiency  . . . . . . . . . . . 172--175
            H. H. Goldstine and   
                 L. P. Horowitz   A Procedure for the Diagonalization of
                                  Normal Matrices  . . . . . . . . . . . . 176--195
                W. E. Milne and   
                 R. R. Reynolds   Stability of a Numerical Solution of
                                  Differential Equations . . . . . . . . . 196--203
               Louis W. Ehrlich   Monte Carlo Solutions of Boundary Value
                                  Problems Involving the Difference
                                  Analogue of $\partial^2u/\partial x^2 +
                                  \partial^2u/\partial y^2 +
                                  ({K}/y)(\partial u/\partial y) = 0$  . . 204--218
                 David Morrison   Numerical Quadrature in Many Dimensions  219--222
             George C. Caldwell   A Note on the Downhill Method  . . . . . 223--225
           Harold W. Milnes and   
               Renfrey B. Potts   Boundary Contraction Solution of
                                  Laplace's Differential Equation  . . . . 226--235
       Elizabeth H. Cuthill and   
               Richard S. Varga   A Method of Normalized Block Iteration   236--244
                H. Allen Curtis   A Functional Canonical Form  . . . . . . 245--258
               Seymour Ginsburg   On the Reduction of Superfluous States
                                  in a Sequential Machine  . . . . . . . . 259--282
                    Marvin Blum   On Exponential Digital Filters . . . . . 283--304
              D. J. Wheeler and   
       H. P. F. Swinnerton-Dyer   Letter to the Editor: ``A Method for
                                  Transposing a Matrix'' . . . . . . . . . 305--305
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 306--312

Journal of the ACM
Volume 6, Number 3, July, 1959

               A. L. Leiner and   
                 W. A. Notz and   
                J. L. Smith and   
                  A. Weinberger   PILOT---A New Multiple Computer System   313--335
                J. H. Wilkinson   Stability of the Reduction of a Matrix
                                  to Almost Triangular and Triangular
                                  Forms by Elementary Similarity
                                  Transformations  . . . . . . . . . . . . 336--359
                     C. T. Fike   Note on the Practical Computation of
                                  Proper Values  . . . . . . . . . . . . . 360--362
                Herbert S. Wilf   A Stability Criterion for Numerical
                                  Integration  . . . . . . . . . . . . . . 363--365
 Fernando J. Corbató and   
                Jack L. Uretsky   Generation of Spherical Bessel Functions
                                  in Digital Computers . . . . . . . . . . 366--375
               Mervin E. Muller   A Comparison of Methods for Generating
                                  Normal Deviates on Digital Computers . . 376--383
                     A. Ralston   A Family of Quadrature Formulas Which
                                  Achieve High Accuracy in Composite Rules 384--394
      Philip C. Curtis, Jr. and   
                Werner L. Frank   An Algorithm for the Determination of
                                  the Polynomial of Best Minimax
                                  Approximation to a Function Defined on a
                                  Finite Point Set . . . . . . . . . . . . 395--404
          Douglas B. Netherwood   Logic Matrices and the Truth Function
                                  Problem  . . . . . . . . . . . . . . . . 405--414
           R. L. Ashenhurst and   
                  N. Metropolis   Unnormalized Floating Point Arithmetic   415--428
               Charles R. Blair   On Computer Transcription of Manual
                                  Morse  . . . . . . . . . . . . . . . . . 429--442
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 443--458

Journal of the ACM
Volume 6, Number 4, October, 1959

                      H. Nagler   Amphisbaenic Sorting . . . . . . . . . . 459--468
                Julius Lieblein   A General Analysis of Variance Scheme
                                  Applicable to a Computer With a Very
                                  Large Memory . . . . . . . . . . . . . . 469--475
                    E. J. Gauss   A Comparison of Machine Organizations by
                                  Their Performance of the Iteration
                                  Solution of Linear Equations . . . . . . 476--485
            Richard Bellman and   
               John Holland and   
                  Robert Kalaba   On an Application of Dynamic Programming
                                  to the Synthesis of Logical Systems  . . 486--493
                  J. W. Sheldon   On the Spectral Norms of Several
                                  Iterative Processes  . . . . . . . . . . 494--505
             Walter Hoffman and   
                 Richard Pavley   A Method for the Solution of the ${N}$th
                                  Best Path Problem  . . . . . . . . . . . 506--514
             A. R. DiDonato and   
                  A. V. Hershey   New Formulas for Computing Incomplete
                                  Elliptic Integrals of the First and
                                  Second Kind  . . . . . . . . . . . . . . 515--526
         Bert F. Green, Jr. and   
          J. E. Keith Smith and   
                     Laura Klem   Empirical Tests of an Additive Random
                                  Number Generator . . . . . . . . . . . . 527--537
                H. Allen Curtis   Multifunctional Circuits in Functional
                                  Canonical Form . . . . . . . . . . . . . 538--547
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 548--556


Journal of the ACM
Volume 7, Number 1, January, 1960

              David E. Ferguson   Input-Output Buffering and Fortran . . . 1--9
            Marvin L. Stein and   
                      Jack Rose   Changing from Analog to Digital
                                  Programming by Digital Techniques  . . . 10--23
                Richard Bellman   Sequential Machines, Ambiguity, and
                                  Dynamic Programming  . . . . . . . . . . 24--28
              M. L. Juncosa and   
                 T. W. Mullikin   On the Increase of Convergence Rates of
                                  Relaxation Procedures for Elliptic
                                  Partial Differential Equations . . . . . 29--36
               Tse-Sun Chow and   
           Harold Willis Milnes   Boundary Contraction Solution of
                                  Laplace's Differential Equation II . . . 37--45
                W. E. Milne and   
                 R. R. Reynolds   Stability of a Numerical Solution of
                                  Differential Equations---Part II . . . . 46--56
               B. A. Galler and   
                D. P. Rozenburg   A Generalization of a Theorem of Carr on
                                  Error Bounds for Runge-Kutta Procedures  57--60
             W. H. Anderson and   
                 R. B. Ball and   
                     J. R. Voss   A Numerical Method for Solving Control
                                  Differential Equations on Digital
                                  Computers  . . . . . . . . . . . . . . . 61--68
                 Gerard P. Weeg   Truncation Error in the Graeffe
                                  Root-Squaring Method . . . . . . . . . . 69--71
                  R. R. Coveyou   Serial Correlation in the Generation of
                                  Pseudo-Random Numbers  . . . . . . . . . 72--74
                   A. Rotenburg   A New Pseudo-Random Number Generator . . 75--77
                H. H. Goldstine   Footnote to a Recent Paper . . . . . . . 78--79
                  R. W. Hamming   Book Reviews . . . . . . . . . . . . . . 80--86

j-j-ACM
Volume 7, Number 2, April, 1960

          Herbert Gelernter and   
               J. R. Hansen and   
                C. L. Gerberich   A Fortran-Compiled List-Processing
                                  Language . . . . . . . . . . . . . . . . 87--101
                Dag Prawitz and   
        Håkan Prawitz and   
                   Neri Voghera   A Mechanical Proof Procedure and its
                                  Realization in an Electronic Computer    102--128
                  Gerard Salton   A New Method for the Payment of Bills
                                  and the Transfer of Credit . . . . . . . 140--149
                 Hans J. Maehly   Methods for Fitting Rational
                                  Approximations, Part I: Telescoping
                                  Procedures for Continued Fractions . . . 150--162
                  Robin E. Esch   A Necessary and Sufficient Condition for
                                  Stability of Partial Difference Equation
                                  Problems . . . . . . . . . . . . . . . . 163--175
                      R. Alonso   A Starting Method for the Three-Point
                                  Adams Predictor-Corrector Method . . . . 176--180
                    E. A. Flinn   A Modification of Filon's Method of
                                  Numerical Integration  . . . . . . . . . 181--184
              David D. Morrison   Remarks on the Unitary Triangularization
                                  of a Nonsymmetric Matrix . . . . . . . . 185--186
                   J. A. Lively   Letter to the Editor: Remarks on
                                  ``Amphisbaenic Sorting'' . . . . . . . . 187--187
                    E. J. Gauss   Corrigendum: ``A Comparison of Machine
                                  Organizations by Their Performance of
                                  the Iteration Solution of Linear
                                  Equations''  . . . . . . . . . . . . . . 188--188
                      Anonymous   Book Reviews . . . . . . . . . . . . . . 189--200

Journal of the ACM
Volume 7, Number 3, July, 1960

               Martin Davis and   
                  Hilary Putman   A Computing Procedure for Quantification
                                  Theory . . . . . . . . . . . . . . . . . 201--215
                M. E. Maron and   
                    J. L. Kuhns   On Relevance, Probabilistic Indexing and
                                  Information Retrieval  . . . . . . . . . 216--244
       Walter F. Freiberger and   
               Richard H. Jones   Computation of the Frequency Function of
                                  a Quadratic Form in Random Normal
                                  Variables  . . . . . . . . . . . . . . . 245--250
                    Arthur Gill   Analysis of Nets by Numerical Methods    251--254
                   Frank Harary   On the Consistency of Precedence
                                  Matrices . . . . . . . . . . . . . . . . 255--259
                   J. M. Ortega   On Sturm Sequences for Tridiagonal
                                  Matrices . . . . . . . . . . . . . . . . 260--263
            Samuel D. Conte and   
                 Ralph T. Dames   On an Alternating Direction Method for
                                  Solving the Plate Problem with Mixed
                                  Boundary Conditions  . . . . . . . . . . 264--273
                Werner L. Frank   Solution of Linear Systems by
                                  Richardson's Method  . . . . . . . . . . 274--286
              G. B. Fitzpatrick   Synthesis of Binary Ring Counters of
                                  Given Periods  . . . . . . . . . . . . . 287--297

Journal of the ACM
Volume 7, Number 4, October, 1960

                 Ronald Prather   Computational Aids for Determining the
                                  Minimal Form of a Truth Function . . . . 299--310
               Seymour Ginsburg   Connective Properties Preserved in
                                  Minimal State Machines . . . . . . . . . 311--325
               C. E. Miller and   
               A. W. Tucker and   
                   R. A. Zemlin   Integer Programming Formulation of
                                  Traveling Salesman Problems  . . . . . . 326--329
                Erwin Kleinfeld   Techniques for Enumerating
                                  Veblen-Wedderburn Systems  . . . . . . . 330--337
                  E. E. Osborne   On Pre-Conditioning of Matrices  . . . . 338--345
               Erwin H. Bareiss   Resultant Procedure and the
                                  Mechanization of the Graeffe Process . . 346--386
               N. L. Gordon and   
             A. H. Flasterstein   A Note on a Method of Computing the
                                  Gamma Function . . . . . . . . . . . . . 387--388
                    Ivan Flores   Computer Time for Address Calculation
                                  Sorting  . . . . . . . . . . . . . . . . 389--409

Journal of the ACM
Volume 7, Number 2, April, 1960

                    W. G. Wadey   Floating-Point Arithmetics . . . . . . . 129--139


Journal of the ACM
Volume 8, Number 1, January, 1961

              Herbert B. Keller   Finite Automata, Pattern Recognition and
                                  Perceptrons  . . . . . . . . . . . . . . 1--20
                Walter Gautschi   Recursive Computation of Certain
                                  Integrals  . . . . . . . . . . . . . . . 21--40
                    Ivan Flores   Analysis of Internal Computer Sorting    41--80
               Seymour Ginsburg   Sets of Tapes Accepted by Different
                                  Types of Automata  . . . . . . . . . . . 81--86
            Aviezri S. Fraenkel   The User of Index Calculus and Mersenne
                                  Primes for the Design of a High-Speed
                                  Digital Multiplier . . . . . . . . . . . 87--96
               A. L. Leiner and   
                   W. W. Youden   A System for Generating
                                  ``Pronounceable'' Names Using a Computer 97--103
                Harry H. Denman   Computer Generation of Optimized
                                  Subroutines  . . . . . . . . . . . . . . 104--116
                      H. Nagler   Letter to the Editor: An Answer to Mr.
                                  J. A. Lively's Remarks on the Paper
                                  ``Amphisbaenic Sorting'' . . . . . . . . 117--117

Journal of the ACM
Volume 8, Number 2, April, 1961

                Donald E. Knuth   Minimizing Drum Latency Time . . . . . . 119--150
                   D. H. Lehmer   A Machine Method for Solving Polynomial
                                  Equations  . . . . . . . . . . . . . . . 151--162
             Martin Greenberger   Notes on a New Pseudo-Random Number
                                  Generator  . . . . . . . . . . . . . . . 163--167
              Lionello Lombardi   System Handling of Functional Operators  168--185
               Peter Calingaert   Two-Dimensional Parity Checking  . . . . 186--200
                  John E. Walsh   Computer-Feasible Method for Handling
                                  Incomplete Data in Regression Analysis   201--211
               Robert Hooke and   
                   T. A. Jeeves   ``Direct Search'' Solution of Numerical
                                  and Statistical Problems . . . . . . . . 212--229
                R. Totschek and   
                     R. C. Wood   An Investigation of Real-Time Solution
                                  of the Transportation Problem  . . . . . 230--239
          L. I. Gutenmakher and   
                  G. E. Vleduts   The Prospects for the Utilization of
                                  Informational-Logical Machines in
                                  Chemistry (USSR) . . . . . . . . . . . . 240--251
              R. C. Brigham and   
                  P. D. Burgess   Generalized Simulation of Post Office
                                  Systems  . . . . . . . . . . . . . . . . 252--259
            Herbert M. Gurk and   
                    Jack Minker   The Design and Simulation of an
                                  Information Processing System  . . . . . 260--270
               H. Edmund Stiles   The Association Factor in Information
                                  Retrieval  . . . . . . . . . . . . . . . 271--279

Journal of the ACM
Volume 8, Number 3, July, 1961

                J. H. Wilkinson   Error Analysis of Direct Methods of
                                  Matrix Inversion . . . . . . . . . . . . 281--330
             Donald E. Johansen   A Modified Givens Method for the
                                  Eigenvalue Evaluation of Large Matrices  331--335
               Tse-Sun Chow and   
           Harold Willis Milnes   Numerical Solution of the Neumann and
                                  Mixed Boundary Value Problems by
                                  Boundary Contraction . . . . . . . . . . 336--358
              Seymour V. Parter   Some Computational Results on
                                  ``Two-line'' Iterative Methods for the
                                  Biharmonic Difference Equation . . . . . 359--365
             R. W. Klopfenstein   Zeros of Nonlinear Functions . . . . . . 366--373
          Edwin S. Campbell and   
                 R. Buehler and   
         J. O. Hirschfelder and   
                      D. Hughes   Numerical Construction of Taylor Series
                                  Approximations for a Set of Simultaneous
                                  First Order Differential Equations . . . 374--383
                      C. Y. Lee   Categorizing Automata by ${W}$-Machine
                                  Programs . . . . . . . . . . . . . . . . 384--399
               Seymour Ginsburg   Compatibility of States in
                                  Input-Independent Machines . . . . . . . 400--403
                    M. E. Maron   Automatic Indexing: An Experiment
                                  Inquiry  . . . . . . . . . . . . . . . . 404--417
                    E. J. Gauss   Locating the Largest Word in a File
                                  Using a Modified Memory  . . . . . . . . 418--425
                      J. Heller   Sequencing Aspects of Multiprogramming   426--439
            Joseph F. A. Ormsby   Design of Numerical Filters with
                                  Applications to Missile Data Processing  440--466

Journal of the ACM
Volume 8, Number 4, October, 1961

                  Michael Arbib   Turing Machines, Finite Automata and
                                  Neural Nets  . . . . . . . . . . . . . . 467--475
               Shigere Watanabe   $5$-Symbol $8$-State and $5$-Symbol
                                  $6$-State Universal Turing Machines  . . 476--483
                H. Allen Curtis   A Generalized Tree Circuit . . . . . . . 484--496
                      J. T. Chu   Some Methods for Simplifying Switching
                                  Circuits Using ``Don't Care'' Conditions 497--512
             Eugene S. Schwartz   An Automatic Sequencing Procedure With
                                  Application to Parallel Programming  . . 513--537
          Charles P. Bourne and   
                 Donald F. Ford   A Study of Methods for Systematically
                                  Abbreviating English Words and Names . . 538--552
                Lauren B. Doyle   Semantic Road Maps for Literature
                                  Searchers  . . . . . . . . . . . . . . . 553--578
                Robert W. Floyd   A Descriptive Language for Symbol
                                  Manipulation . . . . . . . . . . . . . . 579--584
                   Gene Ott and   
              Neil H. Feinstein   Design of Sequential Machines from Their
                                  Regular Expressions  . . . . . . . . . . 585--600
              Thomas N. Hibbard   Least Upper Bounds on Minimal Terminal
                                  State Experiments for Two Classes of
                                  Sequential Machines  . . . . . . . . . . 601--612
                 Kurt Spielberg   Representation of Power Series in Terms
                                  of Polynomials, Rational Approximations
                                  and Continued Fractions  . . . . . . . . 613--627
                  E. E. Osborne   On Least Squares Solutions of Linear
                                  Equations  . . . . . . . . . . . . . . . 628--636
               Charlotte Froese   An Evaluation of Runge-Kutta Type
                                  Methods for Higher Order Differential
                                  Equations  . . . . . . . . . . . . . . . 637--644
                 E. K. Blum and   
              P. C. Curtis, Jr.   Asymptotic Behavior of the Best
                                  Polynomial Approximation . . . . . . . . 645--647
              R. J. Gardner and   
                  T. H. Gosling   Letter to the Editor: ``Optimized
                                  Subroutines''  . . . . . . . . . . . . . 648--649
                   Martin Goetz   Letter to the Editor: ``Internal Sorting
                                  and External Merging'' . . . . . . . . . 649--650


Journal of the ACM
Volume 9, Number 1, January, 1962

              R. A. Brooker and   
                      D. Morris   A General Translation Program for Phrase
                                  Structure Languages  . . . . . . . . . . 1--10
               Stephen Warshall   A Theorem on Boolean Matrices  . . . . . 11--12
              Thomas N. Hibbard   Some Combinatorial Properties of Certain
                                  Trees With Applications to Sorting and
                                  Searching  . . . . . . . . . . . . . . . 13--28
             Leland H. Williams   Algebra of Polynomials in Several
                                  Variables for a Digital Computer . . . . 29--40
                  G. Estrin and   
              C. R. Viswanathan   Organization of a
                                  ``Fixed-Plus-Variable'' Structure
                                  Computer for Computation of Eigenvalues
                                  and Eigenvectors of Real Symmetric
                                  Matrices . . . . . . . . . . . . . . . . 41--60
                Richard Bellman   Dynamic Programming Treatment of the
                                  Travelling Salesman Problem  . . . . . . 61--63
                W. E. Milne and   
                 R. R. Reynolds   Fifth-Order Methods for the Numerical
                                  Solution of Ordinary Differential
                                  Equations  . . . . . . . . . . . . . . . 64--70
           Richard E. von Holdt   Inversion of Triple-Diagonal Compound
                                  Matrices . . . . . . . . . . . . . . . . 71--83
              David L. Phillips   A Technique for the Numerical Solution
                                  of Certain Integral Equations of the
                                  First Kind . . . . . . . . . . . . . . . 84--97
                    D. Morrison   Optimal Mesh Size in the Numerical
                                  Integration of an Ordinary Differential
                                  Equation . . . . . . . . . . . . . . . . 98--103
             Roger L. Crane and   
              Robert J. Lambert   Stability of a Generalized Corrector
                                  Formula  . . . . . . . . . . . . . . . . 104--117
                Eldon R. Hansen   On Quasicyclic Jacobi Methods  . . . . . 118--135
              Lionello Lombardi   Mathematical Structure of Nonarithmetic
                                  Data Processing Procedures . . . . . . . 136--159

Journal of the ACM
Volume 9, Number 2, April, 1962

                 H. Bottenbruch   Structure and Use of ALGOL 60  . . . . . 161--221
             Bruce W. Arden and   
          Bernard A. Galler and   
               Robert M. Graham   An Algorithm for Translating Boolean
                                  Expressions  . . . . . . . . . . . . . . 222--239
                   Franz L. Alt   Digital Pattern Recognition by Moments   240--258
                       W. Doyle   Operations Useful for
                                  Similarity-Invariant Pattern Recognition 259--267
                D. R. Smith and   
                 C. H. Davidson   Maintained Activity in Neural Nets . . . 268--279
                Henry P. Kramer   A Note on the Self-Consistency
                                  Definitions of Generalization and
                                  Inductive Inference  . . . . . . . . . . 280--281
                 R. C. Bose and   
                   R. J. Nelson   A Sorting Problem  . . . . . . . . . . . 282--296

Journal of the ACM
Volume 9, Number 3, July, 1962

                John H. Holland   Outline for a Logical Theory of Adaptive
                                  Systems  . . . . . . . . . . . . . . . . 297--314
                 Joyce Friedman   A Decision Procedure for Computations of
                                  Finite Automata  . . . . . . . . . . . . 315--323
                H. Allen Curtis   Multiple Reduction of Variable
                                  Dependency of Sequential Machines  . . . 324--344
                     G. P. Weeg   The Structure of an Automaton and Its
                                  Operation-Preserving Transformation
                                  Group  . . . . . . . . . . . . . . . . . 345--349
           Seymour Ginsburg and   
                 H. Gordon Rice   Two Families of Languages Related to
                                  ALGOL  . . . . . . . . . . . . . . . . . 350--371
                  Sheldon Sobel   Oscillating Sort---A New Sort Merging
                                  Technique  . . . . . . . . . . . . . . . 372--374
             John S. Bailey and   
                 George Epstein   Single Function Shifting Counters  . . . 375--378
               James J. Peterka   A Method for Obtaining Specific Values
                                  of Compiling-Parameter Functions . . . . 379--386
             Thomas A. Holdiman   Management Techniques for Real Time
                                  Computer Programming . . . . . . . . . . 387--404
                  Sol Weintraub   Cumulative Binomial Probabilities  . . . 405--407

Journal of the ACM
Volume 9, Number 4, October, 1962

              A. L. Dulmage and   
               N. S. Mendelsohn   Matrices Associated with the Hitchcock
                                  Problem  . . . . . . . . . . . . . . . . 409--418
            Jerome M. Kurtzberg   On Approximation Methods for the
                                  Assignment Problem . . . . . . . . . . . 419--439
               Terence G. Jones   An Algorithm for the Numerical
                                  Application of a Linear Operator . . . . 440--449
           Jim Douglas, Jr. and   
                  James E. Gunn   Alternating Direction Methods for
                                  Parabolic Systems in $m$ Space Variables 450--456
                    P. E. Chase   Stability Properties of
                                  Predictor-Corrector Methods for Ordinary
                                  Differential Equations . . . . . . . . . 457--468
                    A. C. Fleck   Isomorphism Groups of Automata . . . . . 469--476
                David G. Cantor   On the Ambiguity Problem of Backus
                                  Systems  . . . . . . . . . . . . . . . . 477--479
                     A. A. Grau   A Translator-Oriented Symbolic
                                  Programming Language . . . . . . . . . . 480--487
                  A. D. Falkoff   Algorithms for Parallel-Search Memories  488--511
                 Frank B. Baker   Information Retrieval Based Upon Latent
                                  Class Analysis . . . . . . . . . . . . . 512--521
                  G. Estrin and   
              C. R. Viswanathan   Correction and Addendum: ``Organization
                                  of a `Fixed-Plus-Variable' Structure
                                  Computer for Computation of Eigenvalues
                                  and Eigenvectors of Real Symmetric
                                  Matrices'' . . . . . . . . . . . . . . . 522--522


Journal of the ACM
Volume 10, 1963

                   J. Hartmanis   Further Results on the Structure of
                                  Sequential Machines  . . . . . . . . . . 78--88
                    Brian Gluss   A Method for Obtaining Suboptimal
                                  Group-Testing Policies Using Dynamic
                                  Programming and Information Theory . . . 89--96
                      S. Twomey   On the Numerical Solution of Fredholm
                                  Integral Equations of the First Kind by
                                  the Inversion of the Linear System
                                  Produced by Quadrature . . . . . . . . . 97--101
                Eldon R. Hansen   On the Danilewski Method . . . . . . . . 102--109
                    Arthur Gill   On a Weight Distribution Problem, with
                                  Application to the Design of Stochastic
                                  Generators . . . . . . . . . . . . . . . 110--122
           F. J. Corbató   On the Coding of Jacobi's Method for
                                  Computing Eigenvalues and Eigenvectors
                                  of Symmetric Matrices  . . . . . . . . . 123--125
               J. L. Allard and   
               A. R. Dobell and   
                     T. E. Hull   Mixed Congruential Random Number
                                  Generators for Decimal Machines  . . . . 131--141
              Thomas N. Hibbard   A Simple Sorting Algorithm . . . . . . . 142--150
               Harold Borko and   
                  Myrna Bernick   Automatic Document Classification  . . . 151--162
                 J. A. Robinson   Theorem-Proving on the Computer  . . . . 163--174
           Seymour Ginsburg and   
                     G. F. Rose   Operations Which Preserve Definability
                                  in Languages . . . . . . . . . . . . . . 175--195
                      Saul Gorn   Detection of Generative Ambiguities in
                                  Context-Free Mechanical Languages  . . . 196--208
                      C. N. Liu   A State Variable Assignment Method for
                                  Asynchronous Sequential Switching
                                  Circuits . . . . . . . . . . . . . . . . 209--216
                R. W. House and   
                        T. Rado   Erratum: ``On a Computer Program for
                                  Obtaining Irreducible Representations
                                  for Two-Level Multiple Input-Output
                                  Logical Systems''  . . . . . . . . . . . 256--256
                 Hans J. Maehly   Methods for Fitting Rational
                                  Approximations, Parts II and III . . . . 257--278
                Anthony Ralston   On Economization of Rational Functions   279--282
       Charles W. Valentine and   
              C. Peter Van Dine   An Algorithm for Mimimax Polynomial
                                  Curve-Fitting of Discrete Data . . . . . 283--290
                 T. E. Hull and   
                  A. L. Creemer   Efficiency of Predictor-Corrector
                                  Procedures . . . . . . . . . . . . . . . 291--301
              H. O. Hartley and   
                   D. L. Harris   Monte Carlo Computations in Normal
                                  Correlation Problems . . . . . . . . . . 302--306
                Robert W. Floyd   Syntactic Analysis and Operator
                                  Precedence . . . . . . . . . . . . . . . 316--333
              Sheldon Klein and   
              Robert F. Simmons   A Computational Approach to Grammatical
                                  Coding of English Words  . . . . . . . . 334--347
                 Joyce Friedman   A Computer Program for a Solvable Case
                                  of the Decision Problem  . . . . . . . . 348--356
             Elwyn R. Berlekamp   Program for Double-Dummy Bridge
                                  Problems---A New Strategy for Mechanical
                                  Game Playing . . . . . . . . . . . . . . 357--364
                  Edwin H. Farr   Lattice Properties of Sequential
                                  Machines . . . . . . . . . . . . . . . . 365--385
                H. Allen Curtis   Use of Decomposition Theory in the
                                  Solution of the State Assignment Problem
                                  of Sequential Machines . . . . . . . . . 386--411
              G. E. Lee-Whiting   Erratum: ``Formulas for Computing
                                  Incomplete Elliptic Integrals of the
                                  First and Second Kinds'' . . . . . . . . 412--412
                  Gerard Salton   Associative Document Retrieval
                                  Techniques Using Bibliographic
                                  Information  . . . . . . . . . . . . . . 440--457
              R. L. Mattson and   
                   O. Firschein   Feature Word Construction for Use with
                                  Pattern Recognition Algorithms: An
                                  Experimental Study . . . . . . . . . . . 458--477
           Seymour Ginsburg and   
               Edwin H. Spanier   Quotients of Context-Free Languages  . . 487--492
               Herbert A. Simon   Experiments with a Heuristic Compiler    493--506
                James R. Slagle   A Heuristic Program that Solves Symbolic
                                  Integration Problems in Freshman
                                  Calculus . . . . . . . . . . . . . . . . 507--520
               Robert H. Oehmke   On the Structures of an Automaton and
                                  Its Input Semigroup  . . . . . . . . . . 521--525
           Michael O. Rabin and   
                       Hao Wang   Words in the History of a Turing Machine
                                  with a Fixed Input . . . . . . . . . . . 526--527
              Robert W. Ritchie   Finite Automata and the Set of Squares   528--531
              A. Ben-Israel and   
                   S. J. Wersan   An Elimination Method for Computing the
                                  Generalized Inverse of an Arbitrary
                                  Complex Matrix . . . . . . . . . . . . . 532--537
                     A. A. Grau   On the Reduction of Number Range in the
                                  Use of the Graeffe Process . . . . . . . 538--544
             Robert P. Rich and   
                     Harry Shaw   A Method for Finding All the Zeros of
                                  $f(z)$ . . . . . . . . . . . . . . . . . 545--549
     Ferdinand Freudenstein and   
                   Bernard Roth   Numerical Solution of Systems of
                                  Nonlinear Equations  . . . . . . . . . . 550--556
                 George Emanuel   The Wilf Stability Criterion for
                                  Numerical Integration  . . . . . . . . . 557--561
                H. Allen Curtis   Generalized Tree Circuit---The Basic
                                  Building Block of an Extended
                                  Decomposition Theory . . . . . . . . . . 562--581
                   W. W. Youden   Index, Volumes 1--10 (1954--1963)  . . . 583--646

Journal of the ACM
Volume 10, Number 1, January, 1963

                 Joyce Friedman   A Semi-Decision Procedure for the
                                  Functional Calculus  . . . . . . . . . . 1--24
            Michael A. Harrison   The Number of Classes of Invertible
                                  Boolean Functions  . . . . . . . . . . . 25--28
           Seymour Ginsburg and   
                   Gene F. Rose   Some Recursively Unsolvable Problems in
                                  ALGOL-Like Languages . . . . . . . . . . 29--47
                R. W. House and   
                        T. Rado   On a Computer Program for Obtaining
                                  Irreducible Representations for
                                  Two-Level Multiple Input-Output Logical
                                  Systems  . . . . . . . . . . . . . . . . 48--77

Journal of the ACM
Volume 10, Number 2, April, 1963

              G. E. Lee-Whiting   Formulas for Computing Incomplete
                                  Elliptic Integrals of the First and
                                  Second Kinds . . . . . . . . . . . . . . 126--130
          J. C. Shepherdson and   
                  H. E. Sturgis   Computability of Recursive Functions . . 217--255

Journal of the ACM
Volume 10, Number 3, July, 1963

                   M. Trainiter   Addressing for Random-Access Storage
                                  with Multiple Bucket Capabilities  . . . 307--315

Journal of the ACM
Volume 10, Number 4, October, 1963

             Eugene S. Schwartz   A Dictionary for Minimum Redundancy
                                  Encoding . . . . . . . . . . . . . . . . 413--439
                    R. L. Baber   Tape Searching Techniques  . . . . . . . 478--486


Journal of the ACM
Volume 11, Number 1, January, 1964

                 J. D. Rutledge   On Ianov's Program Schemata  . . . . . . 1--9
                    R. R. Brown   Tape Sets and Automata . . . . . . . . . 10--14
                 John Cocke and   
                  Marvin Minsky   Universality of Tag Systems with ${P} =
                                  2$ . . . . . . . . . . . . . . . . . . . 15--20
               D. J. Farber and   
             R. E. Griswold and   
                 I. P. Polonsky   SNOBOL, A String Manipulation Language   21--30
                 T. E. Hull and   
                   A. R. Dobell   Mixed Congruential Random Number
                                  Generators for Binary Machines . . . . . 31--40
                 Frank Stockmal   Calculations with Pseudo-Random Numbers  41--52
             C. Donald La Budde   Two New Classes of Algorithms for
                                  Finding the Eigenvalues and Eigenvectors
                                  of Real Symmetric Matrices . . . . . . . 53--58
                    Josef Stoer   A Direct Method for Chebyshev
                                  Approximation by Rational Functions  . . 59--69
             William F. Pickard   Tables of the Generalized Stirling
                                  Numbers of the First Kind  . . . . . . . 70--78
                      T. Giammo   A Mathematical Model for the Automatic
                                  Scaling of a Function  . . . . . . . . . 79--83
              Michael Yoeli and   
                   Shlomo Rinon   Application of Ternary Algebra to the
                                  Study of Static Hazards  . . . . . . . . 84--97
                    E. J. Gauss   Estimation of Power Spectral Density by
                                  Filters  . . . . . . . . . . . . . . . . 98--103
                Maurice Pollack   Message Route Control in a Large
                                  Teletype Network . . . . . . . . . . . . 104--116

Journal of the ACM
Volume 11, Number 2, April, 1964

              William S. Cooper   Fact Retrieval and Deductive
                                  Question-Answering Information Retrieval
                                  Systems  . . . . . . . . . . . . . . . . 117--137
               Harold Borko and   
                  Myrna Bernick   Automatic Document Classification. Part
                                  II. Additional Experiments . . . . . . . 138--151
                   R. Schroeder   Input Data Source Limitations for
                                  Real-Time Operation of Digital Computers 152--158
                 B. Randell and   
                  L. J. Russell   Single-Scan Techniques for the
                                  Translation of Arithmetic Expressions in
                                  ALGOL 60 . . . . . . . . . . . . . . . . 159--167
               R. L. Ashenhurst   Function Evaluation in Unnormalized
                                  Arithmetic . . . . . . . . . . . . . . . 168--187
           William B. Gragg and   
                Hans J. Stetter   Generalized Multistep
                                  Predictor-Corrector Methods  . . . . . . 188--209
               Leonard Tornheim   Convergence of Multipoint Iterative
                                  Methods  . . . . . . . . . . . . . . . . 210--220
                 James Ferguson   Multivariable curve interpolation  . . . 221--228
             William F. Pickard   Tables for the Step-by-Step Integration
                                  of Ordinary Differential Equations of
                                  the First Order  . . . . . . . . . . . . 229--233
                 W. J. Hemmerle   Algebraic Specification of Statistical
                                  Models for Analysis of Variance
                                  Computations . . . . . . . . . . . . . . 234--239
                K. U. Smith and   
               S. D. Ansell and   
                 J. Koehler and   
                   G. H. Servos   Digital Computer System for Dynamic
                                  Analysis of Speech and Sound Feedback
                                  Mechanisms . . . . . . . . . . . . . . . 240--251

Journal of the ACM
Volume 11, Number 3, July, 1964

                James R. Slagle   An Efficient Algorithm for Finding
                                  Certain Minimum-Cost Procedures for
                                  Making Binary Decisions  . . . . . . . . 253--264
                    Ivan Flores   Derivation of a Waiting-Time Factor for
                                  a Multiple-Bank Memory . . . . . . . . . 265--282
               Eugene L. Lawler   An Approach to Multilevel Boolean
                                  Minimization . . . . . . . . . . . . . . 283--294
                    Martin Cohn   Properties of Linear Machines  . . . . . 296--301
           Seymour Ginsburg and   
              Thomas N. Hibbard   Solvability of Machine Mappings of
                                  Regular Sets to Regular Sets . . . . . . 302--312
                C. C. Elgot and   
                 J. D. Rutledge   RS-Machines with Almost Blank Tape . . . 313--337
                    S. Winograd   Input-Error-Limiting Automata  . . . . . 338--351
          Morris Gershinsky and   
                David A. Levine   Aitken-Hermite Interpolation . . . . . . 352--356
                Richard Kronmal   Evaluation of a Pseudorandom Normal
                                  Number Generator . . . . . . . . . . . . 357--363

Journal of the ACM
Volume 11, Number 4, October, 1964

            Calvin C. Elgot and   
               Abraham Robinson   Random-Access Stored Program Machines,
                                  an Approach to Programming Languages . . 365--399
             W. R. Klingman and   
               D. M. Himmelblau   Nonlinear Programming with the Aid of a
                                  Multiple-Gradient Summation Technique    400--415
                  Kenneth Hartt   Some Analytical Procedures for Computers
                                  and their Applications to a Class of
                                  Multidimensional Integrals . . . . . . . 416--421
                  L. Duane Pyle   Generalized Inverse Computations Using
                                  the Gradient Projection Method . . . . . 422--428
                     Lee Krider   A Flow Analysis Algorithm  . . . . . . . 429--436
                  John O'Connor   Mechanized Indexing Methods and their
                                  Testing  . . . . . . . . . . . . . . . . 437--449
             Harold Sackman and   
                   J. B. Munson   Investigation of Computer Operating Time
                                  and System Capacity for Man-Machine
                                  Digital Systems  . . . . . . . . . . . . 450--464
            A. Wood Edwards and   
             Robert L. Chambers   Can A Priori Probabilities Help in
                                  Character Recognition? . . . . . . . . . 465--470
             R. F. Dressler and   
                      W. Werner   Error Rates for Two Methods of
                                  Statistical Pattern Recognition  . . . . 471--480
           Janusz A. Brzozowski   Derivatives of Regular Expressions . . . 481--494


Journal of the ACM
Volume 12, Number 1, January, 1965

                   M. W. Curtis   A Turing Machine Simulator . . . . . . . 1--13
               Robert M. McLure   A Programming Language for Simulating
                                  Digital Systems  . . . . . . . . . . . . 14--22
                 J. A. Robinson   A Machine-Oriented Logic Based on the
                                  Resolution Principle . . . . . . . . . . 23--41
             Sheila A. Greibach   A New Normal-Form Theorem for
                                  Context-Free Phrase Structure Grammars   42--52
                    Eric Wolman   A Fixed Optimum Cell-Size for Records of
                                  Various Lengths  . . . . . . . . . . . . 53--70
                   H. Glass and   
                      L. Cooper   Sequential Search: A Method for Solving
                                  Constrained Optimized Problems . . . . . 71--82
         M. Donald MacLaren and   
               George Marsaglia   Uniform Random Number Generators . . . . 83--89
                   Aaron Booker   Numerical Evaluation of Symmetric
                                  Polynomials  . . . . . . . . . . . . . . 90--94
                  R. W. Hockney   A Fast Direct Solution of Poisson's
                                  Equation Using Fourier Analysis  . . . . 95--113
              J. H. Bramble and   
                  B. E. Hubbard   Approximation of Solutions of Mixed
                                  Boundary Value Problems for Poisson's
                                  Equation by Finite Differences . . . . . 114--123
                  J. C. Butcher   A Modified Multistep Method for the
                                  Numerical Integration of Ordinary
                                  Differential Equations . . . . . . . . . 124--135
               Edward B. Anders   An Error Bound for a Numerical Filtering
                                  Technique  . . . . . . . . . . . . . . . 136--140
                    Arthur Gill   Analysis and Synthesis of Stable Linear
                                  Sequential Circuits  . . . . . . . . . . 141--149

Journal of the ACM
Volume 12, Number 2, April, 1965

                 Paul W. Broome   Discrete Orthogonal Sequences  . . . . . 151--168
              David G. Moursund   Examination of Multiple Roots and Root
                                  Clusters of a Polynomial Using the
                                  Bernoulli Procedure  . . . . . . . . . . 169--174
                    R. D. Glauz   On the Numerical Solution of Ordinary
                                  and Partial Differential Equations Using
                                  Integral Relations . . . . . . . . . . . 175--180
              Charles B. Dunham   Convergence Problems in Maehly's Second
                                  Method . . . . . . . . . . . . . . . . . 181--186
                     G. P. Weeg   The Automorphism Group of the Direct
                                  Product of Strongly Related Automata . . 187--195
                   Shen Lin and   
                     Tibor Rado   Computer Studies of Turing Machine
                                  Problems . . . . . . . . . . . . . . . . 196--212
                      J. T. Chu   Optimum Decision Functions for Computer
                                  Character Recognition  . . . . . . . . . 213--226
                R. L. Crane and   
             R. W. Klopfenstein   A Predictor-Corrector Algorithm with an
                                  Increased Range of Absolute Stability    227--241
                 Herbert Kanner   Number Base Conversion in Significant
                                  Digit Arithmetic . . . . . . . . . . . . 242--246
                  Walter Penney   A ``Binary'' System for Complex Numbers  247--248
                  Jerry Sanders   Document Association and Classification
                                  Based on ${L}$-Languages . . . . . . . . 249--253
              Stephen Glicksman   Concerning the Merging of Equal Length
                                  Tape Files . . . . . . . . . . . . . . . 254--258
                W. J. Dixon and   
                  R. A. Kronmal   The Choice of Origin and Scale for
                                  Graphs . . . . . . . . . . . . . . . . . 259--261
                    C. L. Sheng   Threshold Logic Elements Used as a
                                  Probability Transformer  . . . . . . . . 262--276
                    S. Winograd   On the Time Required to Perform Addition 277--285
                 R. W. Stineman   Digital Time-Domain Analysis of Systems
                                  with Widely Separated Poles  . . . . . . 286--294

Journal of the ACM
Volume 12, Number 3, July, 1965

                      W. Fraser   A Survey of Methods for Computing
                                  Minimax and Near-Minimax Polynomial
                                  Approximations for Functions of a Single
                                  Independent Variable . . . . . . . . . . 295--314
           A. P. Yershóv   One View of Man-Machine Interaction
                                  (Translated by Nicholas Zvegintzov)  . . 315--325
            Richard W. Conn and   
           Richard E. von Holdt   An Online Display for the Study of
                                  Approximating Functions  . . . . . . . . 326--349
                    M. V. Menon   On a Problem Concerning a Central
                                  Storage Device Served by Multiple
                                  Terminals  . . . . . . . . . . . . . . . 350--355
             William K. Winters   A Modified Method of Latent Class
                                  Analysis for File Organization in
                                  Information Retrieval  . . . . . . . . . 356--363
              Franco Mileto and   
             Gianfranco Putzolu   Statistical Complexity of Algorithms for
                                  Boolean Function Minimization  . . . . . 364--375
 J. M. S. Simões Pereira   On the Boolean Matrix Equation
                                  $M'=\vee_{i=1}M^i$ . . . . . . . . . . . 376--382
                 David Moursund   Chebyshev Solution of $n + 1$ Linear
                                  Equations in $n$ Unknowns  . . . . . . . 383--387
             Patrick C. Fischer   Generation of Primes by a
                                  One-Dimensional Real-Time Iterative
                                  Array  . . . . . . . . . . . . . . . . . 388--394
                   D. J. Newman   Location of the Maximum on Unimodal
                                  Surfaces . . . . . . . . . . . . . . . . 395--398
                     A. Paz and   
                       B. Peleg   Ultimate-Definite and Symmetric-Definite
                                  Events and Automata  . . . . . . . . . . 399--410
                  Michael Yoeli   Generalized Cascade Decompositions of
                                  Automata . . . . . . . . . . . . . . . . 411--422
           Seymour Ginsburg and   
               Edwin H. Spanier   Mappings of Languages by Two-Tape
                                  Devices  . . . . . . . . . . . . . . . . 423--434
                    C. L. Sheng   Correction: ``Threshold Logic Elements
                                  Used as a Probability Transformer''  . . 435--435

Journal of the ACM
Volume 12, Number 4, October, 1965

                Leroy F. Meyers   Morphological Classification in the
                                  National Bureau of Standards Mechanical
                                  Translation System . . . . . . . . . . . 437--472
                Lauren B. Doyle   Is Automatic Classification a Reasonable
                                  Application of Statistical Analysis of
                                  Text?  . . . . . . . . . . . . . . . . . 473--489
                  John O'Connor   Automatic Subject Recognition in
                                  Scientific Papers: An Empirical Study    490--515
          Solomon W. Golomb and   
             Leonard D. Baumert   Backtrack Programming  . . . . . . . . . 516--524
               A. V. Srinivasan   An Investigation of Some Computational
                                  Aspects of Integer Programming . . . . . 525--535
               Lawrence Wos and   
         George A. Robinson and   
               Daniel F. Carson   Efficiency and Completeness of the Set
                                  of Support Strategy in Theorem Proving   536--541
               T. R. N. Rao and   
                     N. Zierler   On Mappings for Modular Arithmetic, I    542--544
               S. Berkovits and   
              M. Schlessing and   
                     N. Zierler   On Mappings for Modular Arithmetic, II   545--546
             Donald G. Anderson   Iterative Procedures for Nonlinear
                                  Integral Equations . . . . . . . . . . . 547--560
                   Bruce Barnes   Groups of Automorphisms and Sets of
                                  Equivalence Classes of Input for
                                  Automata . . . . . . . . . . . . . . . . 561--565
                    A. C. Fleck   On the Automorphism Group of an
                                  Automaton  . . . . . . . . . . . . . . . 566--569
             Patrick C. Fischer   On Formalisms for Turing Machines  . . . 570--580
                  Wei Chang and   
                 Donald J. Wong   Analysis of Real Time Multiprogramming   581--588
                 Jack B. Dennis   Segmentation and the Design of
                                  Multiprogrammed Computer Systems . . . . 589--602
              G. B. Dantzig and   
               R. P. Harvey and   
                 R. D. McKnight   Updating the Product Form of the Inverse
                                  for the Revised Simplex Method (A
                                  Summary) . . . . . . . . . . . . . . . . 603--603


Journal of the ACM
Volume 13, Number 1, January, 1966

                B. W. Arden and   
               B. A. Galler and   
              T. C. O'Brien and   
               F. H. Westervelt   Program and Addressing Structure in a
                                  Time-Sharing Environment . . . . . . . . 1--16
           A. P. Yershóv   ALPHA---An Automatic Programming System
                                  of High Efficiency . . . . . . . . . . . 17--24
                    J. Schwartz   Large Parallel Computers . . . . . . . . 25--32
                        A. Gill   Realization of Input-Output Relations by
                                  Sequential Machines  . . . . . . . . . . 33--42
              L. P. Horwitz and   
                 R. M. Karp and   
               R. E. Miller and   
                    S. Winograd   Index Register Allocation  . . . . . . . 43--61
           Seymour Ginsburg and   
                  Joseph Ullian   Ambiguity in Context Free Languages  . . 62--89
                 Philip Gilbert   On the Syntax of Algorithmic Languages   90--107
              Charles B. Dunham   Convergence Problems in Maehly's Second
                                  Method: Part II  . . . . . . . . . . . . 108--113
            George D. Byrne and   
              Robert J. Lambert   Pseudo-Runge-Kutta Methods Involving Two
                                  Points . . . . . . . . . . . . . . . . . 114--123
                 R. N. Maddison   A Procedure for Nonlinear Least Squares
                                  Refinement in Adverse Practical
                                  Conditions . . . . . . . . . . . . . . . 124--134
          C. A. Barlow, Jr. and   
                    E. L. Jones   A Method for the Solution of Roots of a
                                  Nonlinear Equation and for Solution of
                                  the General Eigenvalue Problem . . . . . 135--142
                Takao Tsuda and   
              Hiroshi Matsumoto   A Note on Linear Extrapolation of
                                  Multivariable Functions by the Monte
                                  Carlo Method . . . . . . . . . . . . . . 143--150
            Michael A. Harrison   On Asymptotic Estimates in Switching and
                                  Automata Theory  . . . . . . . . . . . . 151--157
                   Arto Salomaa   Two Complete Axiom Systems for the
                                  Algebra of Regular Events  . . . . . . . 158--169
         Charles A. Trauth, Jr.   Group-Type Automata  . . . . . . . . . . 170--175

Journal of the ACM
Volume 13, Number 2, April, 1966

              Leonard Kleinrock   Sequential Processing Machines (S.P.M.)
                                  Analyzed with a Queueing Theory Model    179--193
                  Ruth A. Weiss   BE VISION, A Package of IBM 7090 FORTRAN
                                  Programs to Draw Orthographic Views of
                                  Combinations of Plane and Quadric
                                  Surfaces . . . . . . . . . . . . . . . . 194--204
             John T. Welch, Jr.   A Mechanical Analysis of the Cyclic
                                  Structure of Undirected Linear Graphs    205--210
              C. V. Ramamoorthy   Analysis of Graphs by Connectivity
                                  Considerations . . . . . . . . . . . . . 211--222
                Stephen A. Cook   The Solvability of the Derivability
                                  Problem for One-Normal Systems . . . . . 223--225
            Ward Douglas Maurer   A Theory of Computer Instructions  . . . 226--235
           Kojiro Kobayashi and   
              Shigeru Sekiguchi   On the Class of Predicates Decidable by
                                  Two-Way Multitape Finite Automata  . . . 236--261
               Howard Holtz and   
                  C. T. Leondes   The Synthesis of Recursive Digital
                                  Filters  . . . . . . . . . . . . . . . . 262--280
              Marvin Minsky and   
                 Seymour Papert   Unrecognizable Sets of Numbers . . . . . 281--286
                 Riaz A. Usmani   Boundary Value Techniques for the
                                  Numerical Solution of Certain Initial
                                  Value Problems in Ordinary Differential
                                  Equations  . . . . . . . . . . . . . . . 287--295
              Philip Rabinowitz   Numerical Experiments in Conformal
                                  Mapping by the Method of Orthonormal
                                  Polynomials  . . . . . . . . . . . . . . 296--303
                  W. W. Bledsoe   Some Results on Multicategory Pattern
                                  Recognition  . . . . . . . . . . . . . . 304--316

Journal of the ACM
Volume 13, Number 3, July, 1966

          B. Krishnamoorthi and   
                  Roger C. Wood   Time-Shared Operations with Both
                                  Interarrival and Service Times
                                  Exponential  . . . . . . . . . . . . . . 317--338
          Lewis T. Reinwald and   
              Richard M. Soland   Conversion of Limited-Entry Decision
                                  Tables to Optimal Computer Programs I:
                                  Minimum Average Processing Time  . . . . 339--358
               Philip K. Hooper   Monogenic Post Normal Systems of
                                  Arbitrary Degree . . . . . . . . . . . . 359--363
           Seymour Ginsburg and   
                  Joseph Ullian   Preservation of Unambiguity and Inherent
                                  Ambiquity in Context-Free Languages  . . 364--368
              Sigmund N. Porter   Use of Multiwrite for General
                                  Programmability of Search Memories . . . 369--373
                  Fred T. Krogh   Predictor-Corrector Methods of High
                                  Order With Improved Stability
                                  Characteristics  . . . . . . . . . . . . 374--385
              Bruce A. Chartres   Automatic Controlled Precision
                                  Calculations . . . . . . . . . . . . . . 386--403
             M. Donald MacLaren   Internal Sorting by Radix Plus Sifting   404--411
                 John S. Bailey   Generalized Single-Ended Counters  . . . 412--418
               William T. Weeks   Numerical Inversion of Laplace
                                  Transforms Using Laguerre Functions  . . 419--429
              R. W. Hamming and   
                  R. S. Pinkham   A Class of Integration Formulas  . . . . 430--438
                   Ivan Erdelyi   On the ``Reverse Order Law'' Related to
                                  the Generalized Inverse of Matrix
                                  Products . . . . . . . . . . . . . . . . 439--443
                  D. L. Overheu   An Abstract Machine for Symbolic
                                  Computation  . . . . . . . . . . . . . . 444--468
              Franco Mileto and   
             Gianfranco Potzolu   Corrigenda: ``Statistical Complexity of
                                  Algorithms for Boolean Function
                                  Minimization'' . . . . . . . . . . . . . 469--469

Journal of the ACM
Volume 13, Number 4, October, 1966

           Azriel Rosenfeld and   
                 John L. Pfaltz   Sequential Operations in Digital Picture
                                  Processing . . . . . . . . . . . . . . . 471--494
                     E. K. Blum   A Formal System of Differentiation . . . 495--504
               Edward B. Anders   An Extension of Romberg Integration
                                  Procedures to ${N}$-Variables  . . . . . 505--510
                 Satya D. Dubey   Statistical Determination of Certain
                                  Mathematical Constants and Functions
                                  Using Computers  . . . . . . . . . . . . 511--525
             Junichi Toyoda and   
           Yoshikazu Tezuka and   
               Yoshiro Kasahara   Analysis of the Address Assignment
                                  Problem for Clustered Keys . . . . . . . 526--532
               F. C. Hennie and   
                  R. E. Stearns   Two-Tape Simulations of Multitape Turing
                                  Machines . . . . . . . . . . . . . . . . 533--546
             Gregory J. Chaitin   On the Length of Programs for Computing
                                  Finite Binary Sequences  . . . . . . . . 547--569
                Rohit J. Parikh   On Context-Free Languages  . . . . . . . 570--581
             Sheila A. Greibach   The Unsolvability of the Recognition of
                                  Linear Context-Free Languages  . . . . . 582--587
          Thomas N. Hibbard and   
                  Joseph Ullian   The Independence of Inherent Ambiguity
                                  From Complementedness Among Context-Free
                                  Languages  . . . . . . . . . . . . . . . 588--593
               Philip K. Hooper   The Immortality Problem for Post Normal
                                  Systems  . . . . . . . . . . . . . . . . 594--599
                        H. Shaw   Discrete Analogs for Continuous Filters  600--604
                   C. D. Negron   Digital One-Third Octave Spectral
                                  Analysis . . . . . . . . . . . . . . . . 605--614
                  J. S. Mamelak   The Placement of Computer Logic Modules  615--629


Journal of the ACM
Volume 14, Number 1, January, 1967

                 Alan J. Perlis   The Synthesis of Algorithmic Systems . . 1--9
           Marvin C. Wunderlich   Sieving Procedures on a Digital Computer 10--19
             P. A. W. Lewis and   
            P. B. Baxendale and   
                  J. L. Bennett   Statistical Discrimination of the
                                  Synonymy/Antonymy Relationship Between
                                  Words  . . . . . . . . . . . . . . . . . 20--44
                  Carl H. Brans   A Computer Program for the Nonnumerical
                                  Testing and Reduction of Sets of
                                  Algebraic Partial Differential Equations 45--62
          Bruce A. Chartres and   
                James C. Geuder   Computable Error Bounds for Direct
                                  Solution of Linear Equations . . . . . . 63--71
              G. W. Stewart III   A Modification of Davidon's Minimization
                                  Method to Accept Difference
                                  Approximations to Derivatives  . . . . . 72--83
                John C. Butcher   A Multistep Generalization of
                                  Runge-Kutta Methods With Four or Five
                                  Stages . . . . . . . . . . . . . . . . . 84--99
              R. R. Coveyou and   
               R. D. MacPherson   Fourier Analysis of Uniform Random
                                  Number Generators  . . . . . . . . . . . 100--119
                  Tzay Y. Young   Binomial-Weighted Orthogonal Polynomials 120--127
              George E. Collins   Subresultants and Reduced Polynomial
                                  Remainder Sequences  . . . . . . . . . . 128--142
                     Brian Shaw   Modified Multistep Methods Based on a
                                  Nonpolynomial Interpolant  . . . . . . . 143--154
              J. J. Kohfeld and   
                 G. T. Thompson   Multistep Methods With Modified
                                  Predictors and Correctors  . . . . . . . 155--166
                   Ann Yasuhara   A Remark on Post Normal Systems  . . . . 167--171
           Seymour Ginsburg and   
         Sheila A. Greibach and   
            Michael A. Harrison   Stack Automata and Compiling . . . . . . 172--201

Journal of the ACM
Volume 14, Number 2, April, 1967

              Robert C. Minnick   Survey of Microcellular Research . . . . 203--241
              Leonard Kleinrock   Time-shared Systems: A Theoretical
                                  Treatment  . . . . . . . . . . . . . . . 242--261
                 Jack E. Shemer   Some Mathematical Considerations of
                                  Time-Sharing Scheduling Algorithms . . . 262--272
                  J. T. Chu and   
                    J. C. Chueh   Error Probability in Decision Functions
                                  for Character Recognition  . . . . . . . 273--280
               David Martin and   
                  Gerald Estrin   Models of Computations and
                                  Systems---Evaluation of Vertex
                                  Probabilities in Graph Models of
                                  Computations . . . . . . . . . . . . . . 281--299
               William M. Waite   Path Detection in Multidimensional
                                  Iterative Arrays . . . . . . . . . . . . 300--310
                    J. B. Moore   A Convergent Algorithm for Solving
                                  Polynomial Equations . . . . . . . . . . 311--315
                 Cleve B. Moler   Iterative Refinement in Floating Point   316--321
                    Manuel Blum   A Machine-Independent Theory of the
                                  Complexity of Recursive Functions  . . . 322--336
                 W. J. Westlake   A Uniform Random Number Generator Based
                                  on the Combination of Two Congruential
                                  Generators . . . . . . . . . . . . . . . 337--340
                  O. G. Mancino   Resolution by Iteration of Some
                                  Nonlinear Systems  . . . . . . . . . . . 341--350
                  Fred T. Krogh   A Test for Instability in the Numerical
                                  Solution of Ordinary Differential
                                  Equations  . . . . . . . . . . . . . . . 351--354
                    A. Ginzburg   A Procedure for Checking Equality of
                                  Regular Expressions  . . . . . . . . . . 355--362
                    C. W. Cryer   On the Numerical Solution of a
                                  Quasi-Linear Elliptic Equation . . . . . 363--375
                  Alan Natapoff   Irreducible Topological Components of an
                                  Arbitrary Boolean Truth Function and
                                  Generation of Their Minimal Coverings    376--381
                  H. E. Pickett   Note Concerning the Algebraic Theory of
                                  Automata . . . . . . . . . . . . . . . . 382--388
           Seymour Ginsburg and   
         Sheila A. Greibach and   
            Michael A. Harrison   One-Way Stack Automata . . . . . . . . . 389--418
 J. M. S. Simões Pereira   Corrigendum: ``On the Boolean Matrix
                                  Equation $M'=\vee_{i=1}M^i$''  . . . . . 419--420
                     G. P. Weeg   Corrigendum: ``The Automorphism Group of
                                  the Direct Product of Strongly Related
                                  Automata'' . . . . . . . . . . . . . . . 421--421

Journal of the ACM
Volume 14, Number 3, July, 1967

               D. P. Gaver, Jr.   Probability Models for Multiprogramming
                                  Computer Systems . . . . . . . . . . . . 423--438
                 G. K. Manacher   Production and Stabilization of
                                  Real-Time Task Schedules . . . . . . . . 439--465
               J. A. Brzozowski   Roots of Star Events . . . . . . . . . . 466--477
                Richard M. Karp   Some Bounds on the Storage Requirements
                                  of Sequential Machines and Turing
                                  Machines . . . . . . . . . . . . . . . . 478--489
              Robert McNaughton   Parenthesis Grammars . . . . . . . . . . 490--500
          Daniel J. Rosenkrantz   Matrix Equations and Normal Forms for
                                  Context-Free Grammars  . . . . . . . . . 501--507
                      I. Oliver   Analysis of Factorial Experiments Using
                                  Generalized Matrix Operations  . . . . . 508--519
                    Victor Klee   A Method for Constructing Circuit Codes  520--528
              Frederic J. Mowle   An Algorithm for Generating Stable
                                  Feedback Shift Registers of Order $n$    529--542
                J. L. Rigal and   
                      J. Gaches   On the Compatibility of a Given Solution
                                  With the Data of a Linear System . . . . 543--548
                J. S. Hicks and   
                         J. Wei   Numerical Solution of Parabolic Partial
                                  Differential Equations With Two-Point
                                  Boundary Conditions by Use of the Method
                                  of Lines . . . . . . . . . . . . . . . . 549--562
            Richard M. Karp and   
          Raymond E. Miller and   
                Shmuel Winograd   The Organization of Computations for
                                  Uniform Recurrence Relations . . . . . . 563--590
              A. B. Carroll and   
                R. T. Wetherald   Applications of Parallel Processing to
                                  Numerical Weather Prediction . . . . . . 591--614

Journal of the ACM
Volume 14, Number 4, October, 1967

            Donald E. Knuth and   
             Richard H. Bigelow   Programming Languages for Automata . . . 615--635
                Robert W. Floyd   Nondeterministic Algorithms  . . . . . . 636--644
            Arnold L. Rosenberg   Real-Time Definable Languages  . . . . . 645--662
                   J. Hartmanis   On Memory Requirements for Context-Free
                                  Language Recognition . . . . . . . . . . 663--665
                Arthur Gill and   
               J. Robert Flexer   Periodic Decomposition of Sequential
                                  Machines . . . . . . . . . . . . . . . . 666--676
        Stål Aanderaa and   
             Patrick C. Fischer   The Solvability of the Halting Problem
                                  for $2$-State Post Machines  . . . . . . 677--682
            Bruce H. Barnes and   
             John M. Fitzgerald   Minimal Experiments for
                                  Input-Independent Machines . . . . . . . 683--686
                James R. Slagle   Automatic Theorem Proving with Renamable
                                  and Semantic Resolution  . . . . . . . . 687--697
               Lawrence Wos and   
         George A. Robinson and   
           Daniel F. Carson and   
                    Leon Shalla   The Concept of Demodulation in Theorem
                                  Proving  . . . . . . . . . . . . . . . . 698--709
           Robert A. Fairthorne   Morphology of ``Information Flow'' . . . 710--719
              Marvin B. Shapiro   An Algorithm for Reconstructing Protein
                                  and RNA Sequences  . . . . . . . . . . . 720--731
                V. G. Sigillito   On a Continuous Method of Approximating
                                  Solutions of the Heat Equation . . . . . 732--741
          Lewis T. Reinwald and   
              Richard M. Soland   Conversion of Limited-Entry Decision
                                  Tables to Optimal Computer Programs II:
                                  Minimum Storage Requirement  . . . . . . 742--756
              Marshall C. Pease   Matrix Inversion Using Parallel
                                  Processing . . . . . . . . . . . . . . . 757--764
                P. L. Odell and   
                   H. P. Decell   On Computing the Fixed-Point Probability
                                  Vector of Ergodic Transition Matrices    765--768
                D. G. Brush and   
              J. J. Kohfeld and   
                 G. T. Thompson   Solution of Ordinary Differential
                                  Equations Using Two ``Off-Step'' Points  769--784
                  A. Van Gelder   Some New Results in Pseudo-Random Number
                                  Generation . . . . . . . . . . . . . . . 785--792
                    S. Winograd   On the Time Required to Perform
                                  Multiplication . . . . . . . . . . . . . 793--802


Journal of the ACM
Volume 15, Number 1, January, 1968

              Maurice V. Wilkes   Computers Then and Now . . . . . . . . . 1--7
                  G. Salton and   
                     M. E. Lesk   Computer Evaluation of Indexing and Text
                                  Processing . . . . . . . . . . . . . . . 8--36
                  Niklaus Wirth   PL360, A Programming Language for the
                                  360 Computers  . . . . . . . . . . . . . 37--74
           Robert E. Echols and   
                    Leon Cooper   Solution of Integer Linear Programming
                                  Problems by Direct Search  . . . . . . . 75--84
            James R. Slagle and   
                  Philip Bursky   Experiments With a Multipurpose,
                                  Theorem-Proving Heuristic Program  . . . 85--99
          Otto Neall Strand and   
                Ed R. Westwater   Statistical Estimation of the Numerical
                                  Solution of a Fredholm Integral Equation
                                  of the First Kind  . . . . . . . . . . . 100--114
                  H. Dubner and   
                       J. Abate   Numerical Inversion of Laplace
                                  Transforms by Relating Them to the
                                  Finite Fourier Cosine Transform  . . . . 115--123
               Donald M. Kaplan   Some Completeness Results in the
                                  Mathematical Theory of Computation . . . 124--134
                    Zamir Bavel   Structure and Transition-Preserving
                                  Functions of Finite Automata . . . . . . 135--158
                Abraham Waksman   A Permutation Network  . . . . . . . . . 159--163

Journal of the ACM
Volume 15, Number 2, April, 1968

                J. Sklansky and   
             M. Finkelstein and   
                  E. C. Russell   A Formalism for Program Translation  . . 165--175
                  P. A. Gilmore   Structuring of Parallel Algorithms . . . 176--192
                  B. Kubert and   
                   J. Szabo and   
                    S. Guilieri   The Perspective Representation of
                                  Functions of Two Variables . . . . . . . 193--204
               Stephen P. Morse   A Mathematical Model for the Analysis of
                                  Contour-Line Data  . . . . . . . . . . . 205--220
                   A. Orden and   
                  V. Nalbandian   A Bidirectional Simplex Algorithm  . . . 221--235
             Donald W. Loveland   Mechanical Theorem-Proving by Model
                                  Elimination  . . . . . . . . . . . . . . 236--251
              Marshall C. Pease   An Adaptation of the Fast Fourier
                                  Transform for Parallel Processing  . . . 252--264
              Frank J. Zeleznik   Quasi-Newton Methods for Nonlinear
                                  Equations  . . . . . . . . . . . . . . . 265--271
           Gerald L. Morris and   
               Patrick L. Odell   Common Solutions for $n$ Matrix
                                  Equations With Applications  . . . . . . 272--274
                  Oliver Aberth   Analysis in the Computable Number Field  275--299
Marcel Paul Schützenberger   A Remark on Acceptable Sets of Numbers   300--303
                 Raymond T. Yeh   Generalized Pair Algebra With
                                  Applications to Automata Theory  . . . . 304--316
             J. E. Hopcroft and   
                   J. D. Ullman   Decidable and Undecidable Questions
                                  About Automata . . . . . . . . . . . . . 317--324
                   J. Hartmanis   Computational Complexity of One-Tape
                                  Turing Machine Computations  . . . . . . 325--339
                Abraham Waksman   Corrigendum: ``A Permutation Network''   340--340

Journal of the ACM
Volume 15, Number 3, July, 1968

             E. G. Coffman, Jr.   Analysis of Two Time-Sharing Algorithms
                                  Designed for Limited Swapping  . . . . . 341--353
                  Paul G. Comba   A Procedure for Detecting Intersections
                                  of Three-Dimensional Objects . . . . . . 354--366
               Peter B. Andrews   Resolution With Merging  . . . . . . . . 367--381
               J. Hartmanis and   
                       H. Shank   On the Recognition of Primes by Automata 382--389
              J. J. Kohfeld and   
                 G. T. Thompson   A Modification of Nordsieck's method
                                  Using an ``Off-Step'' Point  . . . . . . 390--401
                 Gerhard Zielke   Inversion of Modified Symmetric Matrices 402--408
                T. V. Griffiths   The Unsolvability of the Equivalence
                                  Problem for ${\Lambda}$-Free
                                  Nondeterministic Generalized Machines    409--413
           John E. Hopcroft and   
              Jeffrey D. Ullman   Relations Between Time and Tape
                                  Complexities . . . . . . . . . . . . . . 414--427
           Seymour Ginsburg and   
            Michael A. Harrison   One-Way Nondeterministic Real-Time
                                  List-Storage Languages . . . . . . . . . 428--446
             B. A. Chartres and   
                J. J. Florentin   A Universal Syntax-Directed Top-Down
                                  Analyzer . . . . . . . . . . . . . . . . 447--464
             P. M. Lewis II and   
                  R. E. Stearns   Syntax-Directed Transduction . . . . . . 465--488

Journal of the ACM
Volume 15, Number 4, October, 1968

                  Niklaus Wirth   Corrigendum: ``PL360, A Programming
                                  Language for the 360 Computers'' . . . . 489--489
                      Anonymous   Contributions to the Journal of the
                                  Association for Computing Machinery; ACM
                                  Author Instructions for Manuscript
                                  Documentation Unit; Categories of the
                                  Computing Sciences . . . . . . . . . . . 490--492
              C. C. Gotlieb and   
                       S. Kumar   Semantic Clustering of Index Terms . . . 493--513
             Donald R. Morrison   PATRICIA--Practical Algorithm To
                                  Retrieve Information Coded in
                                  Alphanumeric . . . . . . . . . . . . . . 514--534
                 Thomas C. Lowe   The Influence of Data Base
                                  Characteristics and Usage on Direct
                                  Access File Organization . . . . . . . . 535--548
          Edward G. Coffman and   
              Leonard Kleinrock   Feedback Queueing Models for Time-Shared
                                  Systems  . . . . . . . . . . . . . . . . 549--576
               Joseph Abate and   
              Harvey Dubner and   
            Sheldon B. Weinberg   Queueing Analysis of the IBM 2314 Disk
                                  Storage Facility . . . . . . . . . . . . 577--589
                 Raymond Reiter   Scheduling Parallel Computations . . . . 590--599
                   U. Montanari   A Method for Obtaining Skeletons Using a
                                  Quasi-Euclidean Distance . . . . . . . . 600--624
              J. R. Quinlan and   
                     E. B. Hunt   A Formal Deductive Problem-Solving
                                  System . . . . . . . . . . . . . . . . . 625--646
                  Alfred V. Aho   Indexed Grammars --- An Extension of
                                  Context-Free Grammars  . . . . . . . . . 647--671
            Arnold L. Rosenberg   On the Independence of Real-Time
                                  Definability and Certain Structural
                                  Properties of Context-Free Languages . . 672--679
            Dennis F. Cudia and   
           Wilson E. Singletary   Degrees of Unsolvability in Formal
                                  Grammars . . . . . . . . . . . . . . . . 680--692
              Amar Mukhopadhyay   Representation of Events in the von
                                  Neumann Cellular Model . . . . . . . . . 693--705
           Abbas I. Abdel Karim   A Theorem for the Stability of General
                                  Predictor-Corrector Methods for the
                                  Solution of Systems of Differential
                                  Equations  . . . . . . . . . . . . . . . 706--711
                     James Dyer   Generalized Multistep Methods in
                                  Satellite Orbit Computation  . . . . . . 712--719
               Peter B. Andrews   A Correction Concerning Resolution . . . 720--720


Journal of the ACM
Volume 16, Number 1, January, 1969

                      G. Salton   A Policy for JACM  . . . . . . . . . . . 1--2
                  R. W. Hamming   One Man's View of Computer Science . . . 3--12
                W. S. Brown and   
                    J. F. Traub   MERCURY: A System for the Computer-Aided
                                  Distribution of Technical Reports  . . . 13--25
                 Manfred Kochen   Automatic Question-Answering of
                                  English-Like Questions About Simple
                                  Diagrams . . . . . . . . . . . . . . . . 26--48
                J. R. Guard and   
              F. C. Oglesby and   
              J. H. Bennett and   
                   L. G. Settle   Semi-Automated Mathematics . . . . . . . 49--62
                 H. H. Trauboth   Recursive Formulas for the Evaluation of
                                  the Convolution Integral . . . . . . . . 63--72
             E. G. Coffman, Jr.   Analysis of a Drum Input/Output Queue
                                  Under Scheduled Operation in a Paged
                                  Computer System  . . . . . . . . . . . . 73--90
             Sheila A. Greibach   An Infinite Hierarchy of Context-Free
                                  Languages  . . . . . . . . . . . . . . . 91--106
          Daniel J. Rosenkrantz   Programmed Grammars and Classes of
                                  Formal Languages . . . . . . . . . . . . 107--131
           J. A. Brzozowski and   
                     Rina Cohen   On Decompositions of Regular Events  . . 132--144
             Gregory J. Chaitin   On the Length of Programs for Computing
                                  Finite Binary Sequences: Statistical
                                  Considerations . . . . . . . . . . . . . 145--159
                   J. Hartmanis   On the Complexity of Undecidable
                                  Problems in Automata Theory  . . . . . . 160--167
             J. E. Hopcroft and   
                   J. D. Ullman   Some Results on Tape-Bounded Turing
                                  Machines . . . . . . . . . . . . . . . . 168--177
                Abraham Waksman   A Model of Replication . . . . . . . . . 178--188

Journal of the ACM
Volume 16, Number 2, April, 1969

            James H. Slagle and   
                  John K. Dixon   Experiments With Some Programs That
                                  Search Game Trees  . . . . . . . . . . . 189--207
        Jerzy W. Grzymala-Busse   Automorphisms of Polyadic Automata . . . 208--219
                Albert R. Meyer   A Note on Star-Free Events . . . . . . . 220--225
             B. G. Reynolds and   
                   W. F. Cutlip   Synchronization and General Repetitive
                                  Machines, with Applications to Ultimate
                                  Definite Automata  . . . . . . . . . . . 226--234
                Philip M. Spira   The Time Required for Group
                                  Multiplication . . . . . . . . . . . . . 235--243
                    Zohar Manna   Properties of Programs and the
                                  First-Order Predicate Calculus . . . . . 244--255
               Herman A. Maurer   A Direct Proof of the Inherent Ambiguity
                                  of a Simple Context-Free Language  . . . 256--260
                   Peter Wegner   Translation Networks and Function
                                  Composition  . . . . . . . . . . . . . . 261--263
                H. P. Edmundson   New Methods in Automatic Extracting  . . 264--285
                  Gerald Berman   Lattice Approximations to the Minima of
                                  Functions of Several Variables . . . . . 286--294
                     Peter Linz   Linear Multistep Methods for Volterra
                                  Integro-Differential Equations . . . . . 295--301
              Marshall C. Pease   Inversion of Matrices by Partitioning    302--314
                   I. Adiri and   
                  B. Avi-Itzhak   A Time-Sharing Queue with a Finite
                                  Number of Customers  . . . . . . . . . . 315--323
             Robert A. Di Paola   The Recursive Unsolvability of the
                                  Decision Problem for the Class of
                                  Definite Formulas  . . . . . . . . . . . 324--327
                  Paul R. Young   Toward a Theory of Enumerations  . . . . 328--348

Journal of the ACM
Volume 16, Number 3, July, 1969

                 D. W. Loveland   A Simplified Format for the Model
                                  Elimination Theorem-Proving Procedure    349--363
              Erik J. Sandewall   A Planning Problem Solver Based on
                                  Look-Ahead in Stochastic Game Trees  . . 364--382
                  Alfred V. Aho   Nested Stack Automata  . . . . . . . . . 383--406
             Gregory J. Chaitin   On the Simplicity and Speed of Programs
                                  for Computing Infinite Sets of Natural
                                  Numbers  . . . . . . . . . . . . . . . . 407--422
                  T. Kasami and   
                       K. Torii   A Syntax-Analysis Procedure for
                                  Unambiguous Context-Free Grammars  . . . 423--431
        Jerzy W. Grzymala-Busse   On the Periodic Representations and the
                                  Reducibility of Periodic Automata  . . . 432--441
                      C. L. Liu   Lattice Functions, Pair Algebras, and
                                  Finite-State Machines  . . . . . . . . . 442--454
           Dennis M. Moyles and   
             Gerald L. Thompson   An Algorithm for Finding a Minimum
                                  Equivalent Graph of a Digraph  . . . . . 455--460
                 I. S. Reed and   
                      Rein Turn   A Generalization of Shift-Register
                                  Sequence Generators  . . . . . . . . . . 461--473
              Marshall C. Pease   Organization of Large Scale Fourier
                                  Processors . . . . . . . . . . . . . . . 474--482
                   J. N. Lyness   Notes on the Adaptive Simpson Quadrature
                                  Routine  . . . . . . . . . . . . . . . . 483--495
                    H. S. Rahme   A New Look at the Numerical Integration
                                  of Ordinary Differential Equations . . . 496--506
                         A. Tal   On Monotone Decomposable Operators . . . 507--510
                  Tamio Shimizu   A Stochastic Approximation Method for
                                  Optimization Problems  . . . . . . . . . 511--516

Journal of the ACM
Volume 16, Number 4, October, 1969

                George W. Ernst   Sufficient Conditions for the Success of
                                  GPS  . . . . . . . . . . . . . . . . . . 517--533
                  Ugo Montanari   Continuous Skeletons from Digitized
                                  Images . . . . . . . . . . . . . . . . . 534--549
                   J. D. Ullman   Halting Stack Automata . . . . . . . . . 550--563
                Norman E. Gibbs   A Cycle Generation Algorithm for Finite
                                  Undirected Linear Graphs . . . . . . . . 564--568
                S. P. Ghosh and   
                    M. E. Senko   File Organization: On the Selection of
                                  Random Access Index Points for
                                  Sequential Files . . . . . . . . . . . . 569--579
               Georghios Loizou   Nonnormality and Jordan Condition
                                  Numbers of Matrices  . . . . . . . . . . 580--584
                  A. Zafarullah   Finite Difference Scheme for a Third
                                  Boundary Value Problem . . . . . . . . . 585--591
                  Shalhav Zohar   Toeplitz Matrix Inversion: The Algorithm
                                  of W. F. Trench  . . . . . . . . . . . . 592--601
                       H. Frank   Analysis and Optimization of Disk
                                  Storage Devices for Time-Sharing Systems 602--620
             Robert A. Di Paola   Random Sets in Subrecursive Hierarchies  621--630
                     Igal Adiri   Computer Time-Sharing Queues with
                                  Priorities . . . . . . . . . . . . . . . 631--645
             E. G. Coffman, Jr.   Errata: ``Analysis of a Drum
                                  Input/Output Queue Under Scheduled
                                  Operation in a Paged Computer System''   646--646
        Jerzy W. Grzymala-Busse   Errata: ``Automorphisms of Polyadic
                                  Automata'' . . . . . . . . . . . . . . . 646--646
             Donald W. Loveland   Errata: ``Mechanical Theorem-Proving by
                                  Model Elimination''  . . . . . . . . . . 646--646


Journal of the ACM
Volume 17, Number 1, January, 1970

                      G. Salton   On the Role of the ACM Journal . . . . . 1--2
           Seymour Ginsburg and   
                  John Hopcroft   Two-Way Balloon Automata and AFL . . . . 3--13
               Alain Colmerauer   Total Precedence Relations . . . . . . . 14--30
                Dennis F. Cudia   General Problems of Formal Grammars  . . 31--43
            Arnold L. Rosenberg   A Note on Ambiguity of Context-Free
                                  Languages and Presentations of
                                  Semilinear Sets  . . . . . . . . . . . . 44--50
              D. G. Corneil and   
                  C. C. Gotlieb   An Efficient Algorithm for Graph
                                  Isomorphism  . . . . . . . . . . . . . . 51--64
            Herbert M. Gurk and   
                    Jack Minker   Storage Requirements for Information
                                  Handling Centers . . . . . . . . . . . . 65--77
            Donald R. Chand and   
                  Sham S. Kapur   An Algorithm for Convex Polytopes  . . . 78--86
            F. G. Gustavson and   
                 W. Liniger and   
                  R. Willoughby   Symbolic Generation of an Optimal Crout
                                  Algorithm for Sparse Systems of Linear
                                  Equations  . . . . . . . . . . . . . . . 87--109
                C. D. Meyer and   
                  R. J. Painter   Note on a Least Squares Inverse for a
                                  Matrix . . . . . . . . . . . . . . . . . 110--112
                S. K. Chang and   
                        A. Gill   Algorithmic Solution of the
                                  Change-Making Problem  . . . . . . . . . 113--122
         E. G. Coffman, Jr. and   
                R. R. Muntz and   
                     H. Trotter   Waiting Time Distributions for
                                  Processor-Sharing Systems  . . . . . . . 123--130
                Philip J. Rasch   A Queueing Theory Study of Round-Robin
                                  Scheduling of Time-Shared Computer
                                  Systems  . . . . . . . . . . . . . . . . 131--145
               Azriel Rosenfeld   Connectivity in Digital Pictures . . . . 146--160
                    J. Sklansky   Thresholded Convolution Operations . . . 161--165
                   M. A. Breuer   Simplification of the Covering Problem
                                  with Application to Boolean Expressions  166--181
                Harold S. Stone   An Algorithm for Modular Partitioning    182--195

Journal of the ACM
Volume 17, Number 2, April, 1970

               Marvin L. Minsky   Form and Content in Computer Science . . 197--215
               Arthur J. Nevins   A Programming Language with Automatic
                                  Goal Generation and Selection  . . . . . 216--230
                Zamir Bavel and   
                David E. Muller   Connectivity and Reversibility in
                                  Automata . . . . . . . . . . . . . . . . 231--240
                David G. Willis   Computational Complexity and Probability
                                  Constructions  . . . . . . . . . . . . . 241--259
              H. C. Andrews and   
                        J. Kane   Kronecker Matrices, Computer
                                  Implementation, and Generalized Spectra  260--268
                  Seymour Haber   Sequences of Numbers That Are
                                  Approximately Completely Equidistributed 269--272
                  Peter Henrici   Methods of Search for Solving Polynomial
                                  Equations  . . . . . . . . . . . . . . . 273--283
                    H. S. Rahme   Stability Analysis of a New Algorithm
                                  Used for Integrating a System of
                                  Ordinary Differential Equations  . . . . 284--293
                  A. Zafarullah   Application of the Method of Lines to
                                  Parabolic Partial Differential Equations
                                  with Error Estimates . . . . . . . . . . 294--302
                Richard H. Roth   An Approach to Solving Linear Discrete
                                  Optimization Problems  . . . . . . . . . 303--313
             L. E. N. Delbrouck   A Feedback Queueing System with Batch
                                  Arrivals, Bulk Service, and
                                  Queue-Dependent Service Time . . . . . . 314--323
                R. R. Muntz and   
             E. G. Coffman, Jr.   Preemptive Scheduling of Real-Time Tasks
                                  on Multiprocessor Systems  . . . . . . . 324--338
                    Louis Hodes   The Logical Complexity of Geometric
                                  Properties in the Plane  . . . . . . . . 339--347
               G. Ugo Montanari   On Limit Properties in Digitization
                                  Schemes  . . . . . . . . . . . . . . . . 348--360
                J. M. Boyle and   
                     A. A. Grau   An Algorithmic Semantics for ALGOL 60
                                  Identifier Denotation  . . . . . . . . . 361--382
                      B. L. Fox   Accelerating List Processing in Discrete
                                  Programming  . . . . . . . . . . . . . . 383--384
                 B. F. Caviness   On Canonical Forms and Simplification    385--396
             H. H. Kagiwada and   
                      R. Kalaba   An Initial-Value Theory for Fredholm
                                  Integral Equations with Semidegenerate
                                  Kernels  . . . . . . . . . . . . . . . . 412--419
                Takao Tsuda and   
                    Kozo Ichida   Nonlinear Interpolation of Multivariable
                                  Functions by the Monte Carlo Method  . . 420--425

Journal of the ACM
Volume 17, Number 3, July, 1970

                    C. W. Cryer   On the Approximate Solution of Free
                                  Boundary Problems Using Finite
                                  Differences  . . . . . . . . . . . . . . 397--411
          C. V. Ramamoorthy and   
                   K. M. Chandy   Optimization of Memory Hierarchies in
                                  Multiprogrammed Systems  . . . . . . . . 426--445
             Richard I. Shrager   Nonlinear Regression With Linear
                                  Constraints: An Extension of the
                                  Magnified Diagonal Method  . . . . . . . 446--452
                   Alan C. Shaw   Parsing of Graph-Representable Pictures  453--481
                   H. Lynn Beus   The Use of Information in Sorting  . . . 482--495
               W. D. Frazer and   
                 A. C. McKellar   Samplesort: A Sampling Approach to
                                  Minimal Storage Tree Sorting . . . . . . 496--507
               Larry E. Stanfel   Tree Structures for Optimal Searching    508--517
              Frederic J. Mowle   Controllability of Nonlinear Sequential
                                  Networks . . . . . . . . . . . . . . . . 518--524
            Robert Anderson and   
                  W. W. Bledsoe   A Linear Format for Resolution With
                                  Merging and a New Technique for
                                  Establishing Completeness  . . . . . . . 525--534
                James R. Slagle   Interpolation Theorems for Resolution in
                                  Lower Predicate Calculus . . . . . . . . 535--542
                 J. L. Baer and   
                D. P. Bovet and   
                      G. Estrin   Legality and Other Properties of Graph
                                  Models of Computations . . . . . . . . . 543--554
                Zohar Manna and   
                    Amir Pnueli   Formalization of Properties of
                                  Functional Programs  . . . . . . . . . . 555--569

Journal of the ACM
Volume 17, Number 4, October, 1970

          J. Gary Augustson and   
                    Mack Minker   An Analysis of Some Graph Theoretical
                                  Cluster Techniques . . . . . . . . . . . 571--588
                  Hiroshi Akima   A New Method of Interpolation and Smooth
                                  Curve Fitting Based on Local Procedures  589--602
             Donald I. Good and   
                Ralph L. London   Computer Interval Arithmetic: Definition
                                  and Proof of Correct Implementation  . . 603--612
             William B. Gruttke   Pseudo-Runge-Kutta Methods of the Fifth
                                  Order  . . . . . . . . . . . . . . . . . 613--628
             Masahiro Hashimoto   A Method for Solving Large Matrix
                                  Equations Reduced from Fredholm Integral
                                  Equations of the Second Kind . . . . . . 629--636
            Toyohisa Kaneko and   
                       Bede Liu   Accumulation of Round-off Error in Fast
                                  Fourier Transforms . . . . . . . . . . . 637--654
                 L. F. Shampine   Efficiency of a Procedure for
                                  Near-Minimax Approximation . . . . . . . 655--660
                 Brian T. Smith   Error Bounds for Zeros of a Polynomial
                                  Based Upon Gerschgorin's Theorems  . . . 661--674
                      P. Bonzon   Necessary and Sufficient Conditions for
                                  Dynamic Programming of Combinatorial
                                  Type . . . . . . . . . . . . . . . . . . 675--682
        Paul W. Purdom, Jr. and   
             Stephen M. Stigler   Statistical Properties of the Buddy
                                  System . . . . . . . . . . . . . . . . . 683--697
                    C. L. Chang   The Unit Proof and the Input Proof in
                                  Theorem Proving  . . . . . . . . . . . . 698--707
                    David Pager   On the Efficiency of Algorithms  . . . . 708--714
                 Ravi Sethi and   
                   J. D. Ullman   The Generation of Optimal Code for
                                  Arithmetic Expressions . . . . . . . . . 715--728
                 D. Tsichritzis   The Equivalence Problem of Simple
                                  Programs . . . . . . . . . . . . . . . . 729--738
        Jerzy W. Grzymala-Busse   Errata: ``On the Periodic
                                  Representations and the Reducibility of
                                  Periodic Automata''  . . . . . . . . . . 739--739


Journal of the ACM
Volume 18, Number 1, January, 1971

                      G. Salton   Editorial: Some Thoughts on Scientific
                                  Information Dissemination  . . . . . . . 1--3
                Stephen A. Cook   Characterizations of Pushdown Machines
                                  in Terms of Time-Bounded Computers . . . 4--18
               William H. Kautz   An Augmented Content-Addressed Memory
                                  Array for Implementation with
                                  Large-Scale Integration  . . . . . . . . 19--33
             Brian W. Kernighan   Optimal Sequential Partitions of Graphs  34--40
            Nabih N. Abdelmalek   Linear ${L}_1$ Approximation for a
                                  Discrete Point Set and ${L}_1$ Solutions
                                  of Overdetermined Linear Equations . . . 41--47
             N. F. Benschop and   
                     H. C. Ratz   A Mean Square Estimate of the Generated
                                  Roundoff Error in Constant Matrix
                                  Iterative Processes  . . . . . . . . . . 48--62
                 Colin W. Cryer   Topological Problems Arising When
                                  Solving Boundary Value Problems for
                                  Elliptic Partial Differential Equations
                                  by the Method of Finite Differences  . . 63--74
                    C. Dill and   
                     C. W. Gear   A Graphical Search for Stiffly Stable
                                  Methods for Ordinary Differential
                                  Equations  . . . . . . . . . . . . . . . 75--79
              Alfred V. Aho and   
           Peter J. Denning and   
              Jeffrey D. Ullman   Principles of Optimal Page Replacement   80--93
          G. C. Philippatos and   
                  D. R. Moscato   Effects of Constrained Information on
                                  Player Decisions in Experimental
                                  Business Simulation: Some Empirical
                                  Evidence . . . . . . . . . . . . . . . . 94--104
            J. C. Alexander and   
                   A. I. Thaler   The Boundary Count of Digital Pictures   105--112
             Manfred H. Hueckel   An Operator Which Locates Edges in
                                  Digitized Pictures . . . . . . . . . . . 113--125
                C. L. Chang and   
                   J. R. Slagle   Completeness of Linear Refutation for
                                  Theories with Equality . . . . . . . . . 126--136
        Michael A. Harrison and   
               Mario Schkolnick   A Grammatical Characterization of
                                  One-Way Nondeterministic Stack Languages 148--172
                William Goffman   A Mathematical Method for Analyzing the
                                  Growth of a Scientific Discipline  . . . 173--185
       Donald P. Gaver, Jr. and   
              Peter A. W. Lewis   Probability Models for Buffer Storage
                                  Allocation Problems  . . . . . . . . . . 186--198
             P. A. W. Lewis and   
                  G. S. Shedler   A Cyclic-Queue Model of System Overhead
                                  in Multiprogrammed Computer Systems  . . 199--220

Journal of the ACM
Volume 18, Number 2, April, 1971

                J. H. Wilkinson   Some Comments from a Numerical Analyst   137--147
            U. Narayan Bhat and   
               Richard E. Nance   Busy Period Analysis of a Time-Sharing
                                  System Modeled as a Semi-Markov Process  221--238
           J. P. Mylopoulos and   
                    T. Pavlidis   On the Topological Properties of
                                  Quantized Spaces. I. The Notion of
                                  Dimension  . . . . . . . . . . . . . . . 239--246
           J. P. Mylopoulos and   
                    T. Pavlidis   On the Topological Properties of
                                  Quantized Spaces. II. Connectivity and
                                  Order of Connectivity  . . . . . . . . . 247--254
             R. Steffanelli and   
                   A. Rosenfeld   Some Parallel Thinning Algorithms for
                                  Digital Pictures . . . . . . . . . . . . 255--264
               Robert O. Winder   Chow Parameters in Threshold Logic . . . 265--289
                    Manuel Blum   On Effective Procedures for Speeding Up
                                  Algorithms . . . . . . . . . . . . . . . 290--305
                Stephen N. Cole   Deterministic Pushdown Store Machines
                                  and Real-Time Computation  . . . . . . . 306--328

Journal of the ACM
Volume 18, Number 3, July, 1971

                      John Case   A Note on Degrees of Self-Describing
                                  Turing Machines  . . . . . . . . . . . . 329--338
             Alvy Ray Smith III   Simple Computation-Universal Cellular
                                  Spaces . . . . . . . . . . . . . . . . . 339--353
              Richard Simon and   
              Richard C. T. Lee   On the Optimal Solutions to AND/OR
                                  Series-Parallel Graphs . . . . . . . . . 354--372
                     M. S. Mock   Numerical Analysis of a Nonlinear
                                  Diffusion Problem  . . . . . . . . . . . 373--380
           J. P. R. Tootill and   
             W. D. Robinson and   
                    A. G. Adams   The Runs Up-and-Down Performance of
                                  Tausworthe Pseudo-Random Number
                                  Generators . . . . . . . . . . . . . . . 381--399
           William H. Burge and   
                Alan G. Konheim   An Accessing Model . . . . . . . . . . . 400--404
                Donald P. Gaver   Analysis of Remote Terminal Backlogs
                                  under Heavy Demand Conditions  . . . . . 405--415
                   J. M. Robson   An Estimate of the Store Size Necessary
                                  for Dynamic Storage Allocation . . . . . 416--423
                     John Lions   Some Results Concerning the Reduction of
                                  Binary Matrices  . . . . . . . . . . . . 424--430
             Ronald C. de Vries   Minimal Sets of Distinct Literals for a
                                  Logically Passive Function . . . . . . . 431--443
               J. Hartmanis and   
                 J. E. Hopcroft   An Overview of the Theory of
                                  Computational Complexity . . . . . . . . 444--476

Journal of the ACM
Volume 18, Number 4, October, 1971

                      G. Salton   Introduction . . . . . . . . . . . . . . 477--477
                    W. S. Brown   On Euclid's Algorithm and the
                                  Computation of Polynomial Greatest
                                  Common Divisors  . . . . . . . . . . . . 478--504
                W. S. Brown and   
                    J. F. Traub   On Euclid's Algorithm and the Theory of
                                  Subresultants  . . . . . . . . . . . . . 505--514
              George E. Collins   The Calculation of Multivariate
                                  Polynomial Resultants  . . . . . . . . . 515--532
                 Lee E. Heindel   Integer Arithmetic Algorithms for
                                  Polynomial Real Zero Determination . . . 533--548
              William A. Martin   Determining the Equivalence of Algebraic
                                  Expressions by Hash Coding . . . . . . . 549--558
                  S. C. Johnson   On the Problem of Recognizing Zero . . . 559--565
                 James R. Bunch   Equilibration of Symmetric Matrices in
                                  the Max-Norm . . . . . . . . . . . . . . 566--572
                 Donald J. Rose   A Note on Consistent Ordering and Zero
                                  Circulation  . . . . . . . . . . . . . . 573--575
               M. A. Kaplan and   
                  R. A. Papetti   A Note on Quadrilateral Interpolation    576--585
                    C. S. Smith   Multiplicative Pseudo-Random Number
                                  Generators with Prime Modulus  . . . . . 586--593
                 E. Wasserstrom   Solving Boundary-Value Problems by
                                  Imbedding  . . . . . . . . . . . . . . . 594--602
                     Igal Adiri   A Dynamic Time-Sharing Priority Queue    603--610
                     Igal Adiri   A Note on Some Mathematical Models of
                                  Time-Sharing Systems . . . . . . . . . . 611--615
                K. B. Irani and   
                  V. L. Wallace   On Network Linguistics and the
                                  Conversational Design of Queueing
                                  Networks . . . . . . . . . . . . . . . . 616--629
                 Raymond Reiter   Two Results on Ordering for Resolution
                                  with Merging and Linear Format . . . . . 630--646


Journal of the ACM
Volume 19, Number 1, January, 1972

                      G. Salton   Editorial: What Is Computer Science? . . 1--2
                A. C. Fleck and   
           S. T. Hedetniemi and   
                   R. H. Oehmke   \cal S-Semigroups of Automata  . . . . . 3--10
                    T. Pavlidis   Linear and Context-Free Graph Grammars   11--22
              C. P. Earnest and   
                K. G. Balke and   
                    J. Anderson   Analysis of Graphs by Ordering of Nodes  23--42
              Herbert Weinblatt   A New Search Algorithm for Finding the
                                  Simple Cycles of a Finite Directed Graph 43--56
                 Y. E. Chen and   
                    D. L. Epley   Memory Requirements in a Multiprocessing
                                  Environment  . . . . . . . . . . . . . . 57--69
       Harry C. Heacox, Jr. and   
            Paul W. Purdom, Jr.   Analysis of Two Time-Sharing Queueing
                                  Models . . . . . . . . . . . . . . . . . 70--91
            Alan G. Konheim and   
                  Bernd Meister   Service in a Loop System . . . . . . . . 92--108
              Richard C. T. Lee   Fuzzy Logic and the Resolution Principle 109--119
                James R. Slagle   Automatic Theorem Proving with Built-in
                                  Theories Including Equality, Partial
                                  Ordering, and Sets . . . . . . . . . . . 120--135
                 Andrzej Blikle   Addressless Units for Carrying Out
                                  Loop-Free Computations . . . . . . . . . 136--157
                     A. Borodin   Computational Complexity and the
                                  Existence of Complexity Gaps . . . . . . 158--174
            Robert L. Constable   The Operator Gap . . . . . . . . . . . . 175--183
                   Norman Zadeh   Theoretical Efficiency of the
                                  Edmonds-Karp Algorithm for Computing
                                  Maximal Flows  . . . . . . . . . . . . . 184--192

Journal of the ACM
Volume 19, Number 2, April, 1972

            Sheila Greibach and   
               Seymour Ginsburg   Multitape AFA  . . . . . . . . . . . . . 193--221
               Eugene S. Santos   A Note on Bracketed Grammars . . . . . . 222--224
                  A. V. Aho and   
              P. J. Denning and   
                   J. D. Ullman   Weak and Mixed Strategy Precedence
                                  Parsing  . . . . . . . . . . . . . . . . 225--243
         Gordon D. Mulligan and   
                  D. G. Corneil   Corrections to Bierstone's Algorithm for
                                  Generating Cliques . . . . . . . . . . . 244--247
               Jack Edmonds and   
                Richard M. Karp   Theoretical Improvements in Algorithmic
                                  Efficiency for Network Flow Problems . . 248--264
            Peter L. Hammer and   
                   Uri N. Peled   On the Maximization of a Pseudo-Boolean
                                  Function . . . . . . . . . . . . . . . . 265--282
              Stanley M. Selkow   One-Pass Complexity of Digital Picture
                                  Properties . . . . . . . . . . . . . . . 283--295
            L. H. Landweber and   
                E. L. Robertson   Recursive Properties of Abstract
                                  Complexity Classes . . . . . . . . . . . 296--308
            Arnold L. Rosenberg   Addressable Data Graphs  . . . . . . . . 309--340
                  Robert Tarjan   Sorting Using Networks of Queues and
                                  Stacks . . . . . . . . . . . . . . . . . 341--346
           S. C. van Westrhenen   Statistical Studies of Theoremhood in
                                  Classical Propositional and First Order
                                  Predicate Calculus . . . . . . . . . . . 347--365
                 D. W. Loveland   A Unifying View of Some Linear Herbrand
                                  Procedures . . . . . . . . . . . . . . . 366--384

Journal of the ACM
Volume 19, Number 3, July, 1972

                  J. McAfee and   
                     L. Presser   An Algorithm for the Design of Simple
                                  Precedence Grammars  . . . . . . . . . . 385--395
              Clarence A. Ellis   The Halting Problem for Probabilistic
                                  Context-Free Generators  . . . . . . . . 396--399
                    S. Even and   
                  A. Pnueli and   
                      A. Lempel   Permutation Graphs and Transitive Graphs 400--410
                 John L. Pfaltz   Graph Structures . . . . . . . . . . . . 411--422
                     Jin Y. Yen   Finding the Lengths of All Shortest
                                  Paths in ${N}$-Node Nonnegative-Distance
                                  Complete Networks Using $1/2 {N}^3$
                                  Additions and ${N}^3$ Comparisons  . . . 423--424
                  L. E. Stanfel   Practical Aspects of Doubly Chained
                                  Trees for Retrieval  . . . . . . . . . . 425--436
             Nancy M. Huang and   
               Randall E. Cline   Inversion of Persymmetric Matrices
                                  Having Toeplitz Inverses . . . . . . . . 437--444
                     I. Mitrani   Nonpriority Multiprogramming Systems
                                  Under Heavy Demand Conditions ---
                                  Customers' Viewpoint . . . . . . . . . . 445--452
           Richard E. Nance and   
            U. Narayan Bhat and   
             Billy G. Claybrook   Busy Period Analysis of a Time-Sharing
                                  System: Transform Inversion  . . . . . . 453--463
               L. Kleinrock and   
                    R. R. Muntz   Processor Sharing Queueing Models of
                                  Mixed Scheduling Disciplines for Time
                                  Shared Systems . . . . . . . . . . . . . 464--482
                Gary D. Schultz   A Stochastic Model for Message Assembly
                                  Buffering with a Comparison of Block
                                  Assignment Strategies  . . . . . . . . . 483--495
                James R. Slagle   An Approach for Finding ${C}$-Linear
                                  Complete Inference Systems . . . . . . . 496--516
                   J. Bruno and   
                   K. Steiglitz   The Expression of Algorithms by Charts   517--525
        Robert L. Constable and   
               Allan B. Borodin   Subrecursive Programming Languages, Part
                                  I: Efficiency and Program Structure  . . 526--568
                   J. D. Ullman   A Note on the Efficiency of Hashing
                                  Functions  . . . . . . . . . . . . . . . 569--575
                     A. Borodin   Corrigendum: ``Computational Complexity
                                  and the Existence of Complexity Gaps''   576--576

Journal of the ACM
Volume 19, Number 4, October, 1972

             Robert E. Beck and   
                 Bernard Kolman   Computer Approaches to the
                                  Representation of Lie Algebras . . . . . 577--589
         Patrick C. Fischer and   
            Albert R. Meyer and   
            Arnold L. Rosenberg   Real-Time Simulation of Multihead Tape
                                  Units  . . . . . . . . . . . . . . . . . 590--607
                Oscar H. Ibarra   A Note Concerning Nondeterministic Tape
                                  Complexities . . . . . . . . . . . . . . 608--612
                James C. Beatty   An Axiomatic Approach to Code
                                  Optimization for Expressions . . . . . . 613--640
               W. D. Frazer and   
                  B. T. Bennett   Bounds on Optimal Merge Performance, and
                                  a Strategy for Optimality  . . . . . . . 641--648
             Edward M. Reingold   On the Optimality of Some Set Algorithms 649--659
                   J. E. Savage   Computational Work and Time on Finite
                                  Machines . . . . . . . . . . . . . . . . 660--674
              James N. Gray and   
            Michael A. Harrison   On the Covering and Reduction Problems
                                  for Context-Free Grammars  . . . . . . . 675--698
                  Shi-Kuo Chang   The Generation of Minimal Trees with a
                                  Steiner Topology . . . . . . . . . . . . 699--711
              V. Srinivasan and   
                 G. L. Thompson   Accelerated Algorithms for Labeling and
                                  Relabeling of Trees, with Applications
                                  to Distribution Problems . . . . . . . . 712--726
             Carl M. Harris and   
                 Paul G. Marlin   A Note on Feedback Queues with Bulk
                                  Service  . . . . . . . . . . . . . . . . 727--733
                    A. J. Bayes   A Minimum Variance Sampling Technique
                                  for Simulation Models  . . . . . . . . . 734--741
             Bernard P. Zeigler   Towards a Formal Theory of Modeling and
                                  Simulation: Structure Preserving
                                  Morphisms  . . . . . . . . . . . . . . . 742--764


Journal of the ACM
Volume 20, Number 1, January, 1973

              J. Nievergelt and   
                     C. K. Wong   Upper Bounds for the Total Path Length
                                  of Binary Trees  . . . . . . . . . . . . 1--6
            Harry M. Sloate and   
            Theodore A. Bickart   ${A}$-Stable Composite Multistep Methods 7--26
                Harold S. Stone   An Efficient Parallel Algorithm for the
                                  Solution of a Tridiagonal Linear System
                                  of Equations . . . . . . . . . . . . . . 27--38
              G. J. Burnett and   
             E. G. Coffman, Jr.   A Combinatorial Problem Related to
                                  Interleaved Memory Systems . . . . . . . 39--45
                  C. L. Liu and   
               James W. Layland   Scheduling Algorithms for
                                  Multiprogramming in a Hard-Real-Time
                                  Environment  . . . . . . . . . . . . . . 46--61
             Arnold K. Griffith   Mathematical Models for Automatic Line
                                  Detection  . . . . . . . . . . . . . . . 62--80
               Azriel Rosenfeld   Arcs and Curves in Digital Pictures  . . 81--87
             Donald L. Richards   Efficient Exercising of Switching
                                  Elements in Nets of Identical Gates  . . 88--111
             Robert A. Di Paola   The Solvability of the Decision Problem
                                  for Classes of Proper Formulas and
                                  Related Results  . . . . . . . . . . . . 112--126
                  John K. Dixon   ${Z}$-Resolution: Theorem-Proving with
                                  Compiled Axioms  . . . . . . . . . . . . 127--147
                F. K. Hwang and   
                  D. N. Deutsch   A Class of Merging Algorithms  . . . . . 148--159
                 Barry K. Rosen   Tree-Manipulation Systems and
                                  Church-Rosser Theorems . . . . . . . . . 160--187
                James C. Beatty   Errata: ``An Axiomatic Approach to Code
                                  Optimization for Expressions'' . . . . . 188--188

Journal of the ACM
Volume 20, Number 2, April, 1973

           Harvey M. Salkin and   
               Ronald D. Koncal   Set Covering by an All Integer
                                  Algorithm: Computational Experience  . . 189--193
              V. Srinivasan and   
                 G. L. Thompson   Benefit-Cost Analysis of Coding
                                  Techniques for the Primal Transportation
                                  Algorithm  . . . . . . . . . . . . . . . 194--213
              James N. Gray and   
            Michael A. Harrison   Canonical Precedence Schemes . . . . . . 214--234
              David Bruce Lomet   A Formalization of Transition Diagram
                                  Systems  . . . . . . . . . . . . . . . . 235--257
                      G. Salton   Recent Studies in Automatic Text
                                  Analysis and Document Retrieval  . . . . 258--278
            John F. Dalphin and   
             Victor Lovass-Nagy   Best Least Squares Solutions to Finite
                                  Difference Equations Using the
                                  Generalized Inverse and Tensor Product
                                  Methods  . . . . . . . . . . . . . . . . 279--289
                  Armin Friedli   Optimal Covering Algorithms in Methods
                                  of Search for Solving Polynomial
                                  Equations  . . . . . . . . . . . . . . . 290--300
            A. J. Goldstein and   
                  P. L. Richman   A Midpoint Phenomenon  . . . . . . . . . 301--304
            Jacques Morgenstern   Note on a Lower Bound of the Linear
                                  Complexity of the Fast Fourier Transform 305--306
                S. R. Arora and   
                       A. Gallo   Optimization of Static Loading and
                                  Sizing of Multilevel Memory Systems  . . 307--319
             Donald L. Richards   Efficient Exercising of Switching
                                  Elements in Combinational Nets . . . . . 320--332
           Tomasz Pietrzykowski   A Complete Mechanization of Second-Order
                                  Type Theory  . . . . . . . . . . . . . . 333--364

Journal of the ACM
Volume 20, Number 3, July, 1973

                 A. T. Berztiss   A Backtrack Procedure for Isomorphism of
                                  Directed Graphs  . . . . . . . . . . . . 365--377
           Christopher D. Green   A Path Entropy Function for Rooted Trees 378--384
              Donald B. Johnson   A Note on Dijkstra's Shortest Path
                                  Algorithm  . . . . . . . . . . . . . . . 385--388
         Thomas A. Williams and   
               Gregory P. White   A Note on Yen's Algorithm for Finding
                                  the Length of All Shortest Paths in
                                  ${N}$-Node Nonnegative-Distance Networks 389--390
            Toyohisa Kaneko and   
                       Bede Liu   On Local Roundoff Errors in
                                  Floating-Point Arithmetic  . . . . . . . 391--398
                    Webb Miller   Toward Abstract Numerical Analysis . . . 399--408
                   G. A. Watson   An Algorithm for the Inversion of Block
                                  Matrices of Toeplitz Form  . . . . . . . 409--415
                     Igal Adiri   Cyclic Queues with Bulk Arrivals . . . . 416--428
          David D. Grossman and   
            Harvey F. Silverman   Placement of Records on a Secondary
                                  Storage Device to Minimize Access Time   429--438
               G. Tourlakis and   
                  J. Mylopoulos   Some Results in Computational Topology   439--455
                T. G. Lewis and   
                    W. G. Payne   Generalized Feedback Shift Register
                                  Pseudorandom Number Algorithm  . . . . . 456--468
           J. P. R. Tootill and   
             W. D. Robinson and   
                    D. J. Eagle   An Asymptotically Random Tausworthe
                                  Sequence . . . . . . . . . . . . . . . . 469--481
              R. B. Worrell and   
                    B. L. Hulme   Efficient Ordering of Set Expressions
                                  for Symbolic Expansion . . . . . . . . . 482--488
            Edward Ashcroft and   
                Zohar Manna and   
                    Amir Pnueli   Decidable Properties of Monadic
                                  Functional Schemas . . . . . . . . . . . 489--499
                 Gideon Ehrlich   Loopless Algorithms for Generating
                                  Permutations, Combinations, and Other
                                  Combinatorial Configurations . . . . . . 500--513
               Robert M. Keller   Parallel Program Schemata and Maximal
                                  Parallelism I. Fundamental Results . . . 514--537
                James C. Beatty   Errata: ``An Axiomatic Approach to Code
                                  Optimization for Expressions'' . . . . . 538--538
                  M. A. Jenkins   Bernouilli's Method with Implicit
                                  Shifting . . . . . . . . . . . . . . . . 539--544

Journal of the ACM
Volume 20, Number 4, October, 1973

                  Fred T. Krogh   On Testing a Subroutine for the
                                  Numerical Integration of Ordinary
                                  Differential Equations . . . . . . . . . 545--562
           Michael T. McClellan   The Exact Solution of Systems of Linear
                                  Equations with Polynomial Coefficients   563--588
                   I. Adiri and   
                   M. Hofri and   
                       M. Yadin   A Multiprogramming Queue . . . . . . . . 589--603
              C. C. Gotlieb and   
                  G. H. MacEwen   Performance of Movable-Head Disk Storage
                                  Devices  . . . . . . . . . . . . . . . . 604--623
                  P. C. Yue and   
                     C. K. Wong   On the Optimality of the Probability
                                  Ranking Scheme in Storage Applications   624--633
             Manfred H. Hueckel   A Local Visual Operator Which Recognizes
                                  Edges and Lines  . . . . . . . . . . . . 634--647
               Rona B. Stillman   The Concept of Weak Substitution in
                                  Theorem-Proving  . . . . . . . . . . . . 648--667
               Leonard Bass and   
                     Paul Young   Ordinal Hierarchies and Naming
                                  Complexity Classes . . . . . . . . . . . 668--686
                Robert P. Daley   An Example of Information and
                                  Computation Resource Trade-Off . . . . . 687--695
               Robert M. Keller   Parallel Program Schemata and Maximal
                                  Parallelism II: Construction of Closures 696--710


Journal of the ACM
Volume 21, Number 1, January, 1974

                  David G. Herr   On a Statistical Model of Strand and
                                  Westwater for the Numerical Solution of
                                  a Fredholm Integral Equation of the
                                  First Kind . . . . . . . . . . . . . . . 1--5
                  Nai-Kuan Tsao   Some a Posteriori Error Bounds in
                                  Floating-Point Computations  . . . . . . 6--17
               L. W. Cotten and   
                 A. M. Abd-Alla   Processing Times for Segmented Jobs with
                                  I/O Compute Overlap  . . . . . . . . . . 18--30
            P. A. Franaszek and   
                   T. J. Wagner   Some Distribution-Free Aspects of Paging
                                  Algorithm Performance  . . . . . . . . . 31--39
         Giorgio Ingargiola and   
                 James F. Korsh   Finding Optimal Demand Paging Algorithms 40--53
                  Debasis Mitra   Some Aspects of Hierarchical Memory
                                  Systems  . . . . . . . . . . . . . . . . 54--65
              Kenneth C. Sevcik   Scheduling for Minimum Total Loss Using
                                  Service Time Distributions . . . . . . . 66--75
            Christopher Earnest   Some Topics in Code Optimization . . . . 76--102
           Michael A. Crane and   
             Donald L. Iglehart   Simulating Stable Stochastic Systems, I:
                                  General Multiserver Queues . . . . . . . 103--113
           Michael A. Crane and   
             Donald L. Iglehart   Simulating Stable Stochastic Systems,
                                  II: Markov Chains  . . . . . . . . . . . 114--123
                 S. Fleisig and   
                D. Loveland and   
           A. K. Smiley III and   
                  D. L. Yarmush   An Implementation of the Model
                                  Elimination Proof Procedure  . . . . . . 124--139
           Walter H. Kohler and   
              Kenneth Steiglitz   Characterization and Theoretical
                                  Comparison of Branch-and-Bound
                                  Algorithms for Permutation Problems  . . 140--156
           P. S. Kritzinger and   
                   J. W. Graham   A Theorem in the Theory of Compromise
                                  Merge Methods  . . . . . . . . . . . . . 157--160
                  Mary Shaw and   
                    J. F. Traub   On the Number of Multiplications for the
                                  Evaluation of a Polynomial and Some of
                                  Its Derivatives  . . . . . . . . . . . . 161--167
           Robert A. Wagner and   
             Michael J. Fischer   The String-to-String Correction Problem  168--173

Journal of the ACM
Volume 21, Number 2, April, 1974

                  D. Michie and   
                   E. E. Sibert   Some Binary Derivation Systems . . . . . 175--190
               Ross A. Overbeek   A New Class of Automated Theorem-Proving
                                  Algorithms . . . . . . . . . . . . . . . 191--200
               Richard P. Brent   The Parallel Evaluation of General
                                  Arithmetic Expressions . . . . . . . . . 201--206
                    David Pager   Further Results on the Problem of
                                  Finding Minimal Length Programs for
                                  Decision Tables  . . . . . . . . . . . . 207--212
           Armen Gabrielian and   
               Seymour Ginsburg   Grammar Schemata . . . . . . . . . . . . 213--226
                  G. Berman and   
                   A. W. Colijn   A Modified List Technique Allowing
                                  Binary Search  . . . . . . . . . . . . . 227--232
                R. T. Chien and   
                     E. A. Mark   A Document Storage Method Based on
                                  Polarized Distance . . . . . . . . . . . 233--245
                    Peter Elias   Efficient Storage and Retrieval by
                                  Content and Address of Static Files  . . 246--260
              M. M. Blevins and   
                  G. W. Stewart   Calculating the Eigenvectors of
                                  Diagonally Dominant Matrices . . . . . . 261--271
                  Shalhav Zohar   The Solution of a Toeplitz Set of Linear
                                  Equations  . . . . . . . . . . . . . . . 272--276
             Ellis Horowitz and   
                   Sartaj Sahni   Computing Partitions with Applications
                                  to the Knapsack Problem  . . . . . . . . 277--292
          William J. Gordon and   
          Richard F. Riesenfeld   Bernstein-Bézier Methods for the
                                  Computer-Aided Design of Free Form
                                  Curves and Surfaces  . . . . . . . . . . 293--310
              Charles B. Dunham   Efficiency of Chebyshev Approximation on
                                  Finite Subsets . . . . . . . . . . . . . 311--313
               E. Balkovich and   
                    W. Chiu and   
                 L. Presser and   
                        R. Wood   Comments on a Paper by Gaver . . . . . . 314--315
              Hisashi Kobayashi   Application of the Diffusion
                                  Approximation to Queueing Networks I:
                                  Equilibrium Queue Distributions  . . . . 316--328
               J. A. Michel and   
             E. G. Coffman, Jr.   Synthesis of a Feedback Queueing
                                  Discipline for Computer Operation  . . . 329--339
                Steven Katz and   
                Alan G. Konheim   Priority Disciplines in a Loop System    340--349
             Manfred H. Hueckel   Erratum: ``A Local Visual Operator Which
                                  Recognizes Edges and Lines'' . . . . . . 350--350

Journal of the ACM
Volume 21, Number 3, July, 1974

       Ramachendra P. Batni and   
         Jeffrey D. Russell and   
                Charles R. Kime   An Efficient Algorithm for Finding an
                                  Irredundant Set Cover  . . . . . . . . . 351--355
             Robert M. Haralick   The Diclique Representation and
                                  Decomposition of Binary Relations  . . . 356--366
                M. S. Hecht and   
                   J. D. Ullman   Characterizations of Reducible Flow
                                  Graphs . . . . . . . . . . . . . . . . . 367--375
               E. M. Palmer and   
               M. A. Rahimi and   
                 R. W. Robinson   Efficiency of a Binary Comparison
                                  Storage Technique  . . . . . . . . . . . 376--384
                  Chung C. Wang   An Algorithm for the Chromatic Number of
                                  a Graph  . . . . . . . . . . . . . . . . 385--391
                 C. K. Wong and   
                Don Coppersmith   A Combinatorial Problem Related to
                                  Multimodule Memory Organizations . . . . 392--402
             Gregory J. Chaitin   Information-Theoretic Limitations of
                                  Formal Systems . . . . . . . . . . . . . 403--424
                  John Gill and   
                    Manuel Blum   On Almost Everywhere Complex Recursive
                                  Functions  . . . . . . . . . . . . . . . 425--435
                 L. K. Schubert   Iterated Limiting Recursion and the
                                  Program Minimization Problem . . . . . . 436--445
              Thomas N. Hibbard   Context-Limited Grammars . . . . . . . . 446--453
                Paul L. Richman   Computing a Subinterval of the Image . . 454--458
              Hisashi Kobayashi   Application of the Diffusion
                                  Approximation to Queueing Networks II:
                                  Nonequilibrium Distributions and
                                  Applications to Computer Modeling  . . . 459--469
            Alan G. Konheim and   
                  Bernd Meister   Waiting Lines and Times in a System with
                                  Polling  . . . . . . . . . . . . . . . . 470--490
                   J. M. Robson   Bounds for Some Functions Concerning
                                  Dynamic Storage Allocation . . . . . . . 491--499
           Mandell Bellmore and   
                     Saman Hong   Transformation of Multisalesmen Problem
                                  to the Standard Traveling Salesman
                                  Problem  . . . . . . . . . . . . . . . . 500--504
         L. E. Trotter, Jr. and   
                   C. M. Shetty   An Algorithm for the Bounded Variable
                                  Integer Programming Problem  . . . . . . 505--513
               T. I. Fenner and   
                      G. Loizou   Some New Bounds on the Condition Numbers
                                  of Optimally Scaled Matrices . . . . . . 514--524
                      Anonymous   Contributions to the Journal of the
                                  Association of Computing Machinery . . . 525--526

Journal of the ACM
Volume 21, Number 4, October, 1974

        Michael A. Harrison and   
                  Ivan M. Havel   On the Parsing of Deterministic
                                  Languages  . . . . . . . . . . . . . . . 525--548
              John Hopcroft and   
                  Robert Tarjan   Efficient Planarity Testing  . . . . . . 549--568
           Philippe G. H. Lehot   An Optimal Algorithm to Detect a Line
                                  Graph and Output Its Root Graph  . . . . 569--575
                    Frank Rubin   A Search Procedure for Hamilton Paths
                                  and Circuits . . . . . . . . . . . . . . 576--580
             Robert J. Plemmons   Linear Least Squares by Elimination and
                                  MGS  . . . . . . . . . . . . . . . . . . 581--585
                   Paul S. Wang   The Undecidability of the Existence of
                                  Zeros of Real Elementary Functions . . . 586--589
                L. Henschen and   
                         L. Wos   Unit Refutations and Horn Sets . . . . . 590--605
               Arthur J. Nevins   A Human Oriented Logic for Automatic
                                  Theorem-Proving  . . . . . . . . . . . . 606--621
                James R. Slagle   Automated Theorem-Proving for Theories
                                  with Simplifiers, Commutativity, and
                                  Associativity  . . . . . . . . . . . . . 622--642
                 H. T. Kung and   
                    J. F. Traub   Optimal Order of One-Point and
                                  Multipoint Iteration . . . . . . . . . . 643--651
            Arnold L. Rosenberg   Allocating Storage for Extendible Arrays 652--670
                     Ravi Sethi   Testing for the Church-Rosser Property   671--679
          Anthony S. Wojcik and   
                   Gernot Metze   An Analysis of Some Relationships
                                  Between Post and Boolean Algebras  . . . 680--696


Journal of the ACM
Volume 22, Number 1, January, 1975

              Leslie G. Valiant   Regularity and Related Problems for
                                  Deterministic Pushdown Automata  . . . . 1--10
                   Harry T. Hsu   An Algorithm for Finding a Minimal
                                  Equivalent Graph of a Digraph  . . . . . 11--16
                  Clement T. Yu   A Formal Construction of Term Classes    17--37
                E. Horowitz and   
                       S. Sahni   On Computing the Exact Determinant of
                                  Matrices with Polynomial Entries . . . . 38--50
            C. A. Micchelli and   
                 W. L. Miranker   High Order Search Methods for Finding
                                  Roots  . . . . . . . . . . . . . . . . . 51--60
                   John R. Rice   A Metalgorithm for Adaptive Quadrature   61--82
           Samuel H. Fuller and   
                 Forest Baskett   An Analysis of Drum Storage Units  . . . 83--105
           Walter H. Kohler and   
              Kenneth Steiglitz   Exact, Approximate, and Guaranteed
                                  Accuracy Algorithms for the Flow-Shop
                                  Problem $n/2/{F}/{\overline F}$  . . . . 106--114
                   Sartaj Sahni   Approximate Algorithms for the 0/1
                                  Knapsack Problem . . . . . . . . . . . . 115--124
                   J. W. Wright   The Change-Making Problem  . . . . . . . 125--128
            Robert S. Boyer and   
              J. Strother Moore   Proving Theorems About LISP Functions    129--144
              Lawrence Yelowitz   Derivation of a Path-Connectivity Matrix
                                  for Tagged Flowcharts  . . . . . . . . . 145--154
              Richard E. Ladner   On the Structure of Polynomial Time
                                  Reducibility . . . . . . . . . . . . . . 155--171

Journal of the ACM
Volume 22, Number 2, April, 1975

              C. C. Gotlieb and   
                  G. H. MacEwen   Errata: ``Performance of Movable-Head
                                  Disk Storage Devices'' . . . . . . . . . 172--172
               Roy Lowrance and   
               Robert A. Wagner   An Extension of the String-to-String
                                  Correction Problem . . . . . . . . . . . 177--183
            Jacques Morgenstern   The Linear Complexity of Computation . . 184--194
            David E. Muller and   
            Franco P. Preparata   Bounds to Complexities of Networks for
                                  Sorting and for Switching  . . . . . . . 195--201
                    Y. Perl and   
                M. R. Garey and   
                        S. Even   Efficient Generation of Optimal Prefix
                                  Code: Equiprobable Words Using Unequal
                                  Cost Letters . . . . . . . . . . . . . . 202--214
            Robert Endre Tarjan   Efficiency of a Good But Not Linear Set
                                  Union Algorithm  . . . . . . . . . . . . 215--225
                   Bernd Knauer   A Simple Planarity Criterion . . . . . . 226--230
                  Jair M. Babad   A Generalized Multi-Entrance
                                  Time-Sharing Priority Queue  . . . . . . 231--247
             Forest Baskett and   
             K. Mani Chandy and   
           Richard R. Muntz and   
           Fernando G. Palacios   Open, Closed and Mixed Networks of
                                  Queues with Different Classes of
                                  Customers  . . . . . . . . . . . . . . . 248--260
                   Erol Gelenbe   On Approximate Computer System Models    261--269
                Micha Hofri and   
                    Micha Yadin   A Processor in Series with
                                  Demand-Interrupting Devices --- a
                                  Stochastic Model . . . . . . . . . . . . 270--290
                David R. Musser   Multivariate Polynomial Factorization    291--308
            Arnold L. Rosenberg   Corrigendum: ``Allocating Storage for
                                  Extendible Arrays''  . . . . . . . . . . 308--308

Journal of the ACM
Volume 22, Number 3, July, 1975

            Roger C. Schank and   
            Neil M. Goldman and   
      Charles J. Rieger III and   
        Christopher K. Riesbeck   Inference and Paraphrase by Computer . . 309--328
             Gregory J. Chaitin   A Theory of Program Size Formally
                                  Identical to Information Theory  . . . . 329--340
                    Nancy Lynch   On Reducibility to Complex or Sparse
                                  Sets . . . . . . . . . . . . . . . . . . 341--345
                 Glenn Manacher   A New Linear-Time ``On-Line'' Algorithm
                                  for Finding the Smallest Initial
                                  Palindrome of a String . . . . . . . . . 346--351
              S. E. Goodman and   
           S. T. Hedetniemi and   
                   P. J. Slater   Advances on the Hamiltonian Completion
                                  Problem  . . . . . . . . . . . . . . . . 352--360
                 John L. Pfaltz   Representing Graphs by Knuth Trees . . . 361--366
                Peter Elias and   
              Richard A. Flower   The Complexity of Some Simple Retrieval
                                  Problems . . . . . . . . . . . . . . . . 367--379
         Robert E. Dressler and   
               S. Thomas Parker   Primes with a Prime Subscript  . . . . . 380--381
                J. L. Bruno and   
                    T. Lassagne   The Generation of Optimal Code for Stack
                                  Machines . . . . . . . . . . . . . . . . 382--396
                 Walter C. Oney   Queueing Analysis of the Scan Policy for
                                  Moving-Head Disks  . . . . . . . . . . . 397--412
              G. Terry Ross and   
                D. Klingman and   
                      A. Napier   A Computational Study of the Effects of
                                  Problem Dimensions on Solution Times for
                                  Transportation Problems  . . . . . . . . 413--424
                     Ravi Sethi   Errata: ``Testing for the Church-Rosser
                                  Property'' . . . . . . . . . . . . . . . 424--424
                Antonin Svoboda   The Concept of Term Exclusiveness and
                                  Its Effect on the Theory of Boolean
                                  Functions  . . . . . . . . . . . . . . . 425--440

Journal of the ACM
Volume 22, Number 4, October, 1975

               M. C. Easton and   
                     C. K. Wong   The Effect of a Capacity Constraint on
                                  the Minimal Cost of a Partition  . . . . 441--449
                 Ellis Horowitz   A Sorting Algorithm for Polynomial
                                  Multiplication . . . . . . . . . . . . . 450--462
            Oscar H. Ibarra and   
                    Chul E. Kim   Fast Approximation Algorithms for the
                                  Knapsack and Sum of Subset Problems  . . 463--468
                 H. T. Kung and   
                  F. Luccio and   
                F. P. Preparata   On Finding the Maxima of a Set of
                                  Vectors  . . . . . . . . . . . . . . . . 469--476
                    S. Winograd   On the Parallel Evaluation of Certain
                                  Arithmetic Expressions . . . . . . . . . 477--492
               Eberhard Bertsch   An Observation on Relative Parsing Time  493--498
               I. H. Sudborough   A Note on Tape-Bounded Complexity
                                  Classes and Linear Context-Free
                                  Languages  . . . . . . . . . . . . . . . 499--500
                Bal Kishan Dass   A Sufficient Bound for Codes Correcting
                                  Bursts with Weight Constraint  . . . . . 501--503
                     J. R. Cash   A Class of Implicit Runge-Kutta Methods
                                  for the Numerical Integration of Stiff
                                  Ordinary Differential Equations  . . . . 504--511
                    Webb Miller   Computer Search for Numerical
                                  Instability  . . . . . . . . . . . . . . 512--521
               K. L. Krause and   
                 V. Y. Shen and   
                H. D. Schwetman   Analysis of Several Task-Scheduling
                                  Algorithms for a Model of
                                  Multiprogramming Computer Systems  . . . 522--550
                  John P. Hayes   The Fanout Structure of Switching
                                  Functions  . . . . . . . . . . . . . . . 551--571
                Robert Kowalski   A Proof Procedure Using Connection
                                  Graphs . . . . . . . . . . . . . . . . . 572--595
             J. Robert Jump and   
              P. S. Thiagarajan   On the Interconnection of Asynchronous
                                  Control Structures . . . . . . . . . . . 596--612


Journal of the ACM
Volume 23, Number 1, January, 1976

                  A. V. Aho and   
           D. S. Hirschberg and   
                   J. D. Ullman   Bounds on the Complexity of the Longest
                                  Common Subsequence Problem . . . . . . . 1--12
                 C. K. Wong and   
               Ashok K. Chandra   Bounds for the String Editing Problem    13--16
             M. Dennis Mickunas   On the Complete Covering Problem for
                                  LR(k) Grammars . . . . . . . . . . . . . 17--30
                  J. R. Ullmann   An Algorithm for Subgraph Isomorphism    31--42
                M. R. Garey and   
                  D. S. Johnson   The Complexity of Near-Optimal Graph
                                  Coloring . . . . . . . . . . . . . . . . 43--49
               Robert A. Wagner   A Shortest Path Algorithm for
                                  Edge-Sparse Graphs . . . . . . . . . . . 50--57
               Alberto Martelli   A Gaussian Elimination Algorithm for the
                                  Enumeration of Cut Sets in a Graph . . . 58--73
                   Narsingh Deo   Note on Hopcroft and Tarjan's Planarity
                                  Algorithm  . . . . . . . . . . . . . . . 74--75
                   C. T. Yu and   
                      G. Salton   Precision Weighting --- An Effective
                                  Automatic Indexing Method  . . . . . . . 76--88
                 Kenny S. Crump   Numerical Inversion of Laplace
                                  Transforms Using a Fourier Series
                                  Approximation  . . . . . . . . . . . . . 89--96
                  D. Potier and   
                 E. Gelenbe and   
                     J. Lenfant   Adaptive Allocation of Central
                                  Processing Unit Quanta . . . . . . . . . 97--102
                 R. A. Cody and   
             E. G. Coffman, Jr.   Record Allocation for Minimizing
                                  Expected Retrieval Costs on Drum-Like
                                  Storage Devices  . . . . . . . . . . . . 103--115
                Sartaj K. Sahni   Algorithms for Scheduling Independent
                                  Tasks  . . . . . . . . . . . . . . . . . 116--127
               Ronald Fagin and   
              Malcolm C. Easton   The Independence of Miss Ratio on Page
                                  Size . . . . . . . . . . . . . . . . . . 128--146
           D. S. Hirschberg and   
                     C. K. Wong   A Polynomial-Time Algorithm for the
                                  Knapsack Problem with Two Variables  . . 147--154
                 Britton Harris   A Code for the Transportation Problem of
                                  Linear Programming . . . . . . . . . . . 155--157
                John B. Kam and   
              Jeffrey D. Ullman   Global Data Flow Analysis and Iterative
                                  Algorithms . . . . . . . . . . . . . . . 158--171
            Susan L. Graham and   
                    Mark Wegman   A Fast and Usually Linear Algorithm for
                                  Global Flow Analysis . . . . . . . . . . 172--202
      Christoph M. Hoffmann and   
          Lawrence H. Landweber   A Completeness Theorem for Straight-Line
                                  Programs with Structured Variables . . . 203--220

Journal of the ACM
Volume 23, Number 2, April, 1976

                Harold N. Gabow   An Efficient Implementation of Edmonds'
                                  Algorithm for Maximum Matching in Graphs 221--234
              Richard G. Larson   Efficiency of Computation of Cayley
                                  Tables of $2$-Groups . . . . . . . . . . 235--241
               Richard P. Brent   Fast Multiple-Precision Evaluation of
                                  Elementary Functions . . . . . . . . . . 242--251
                     H. T. Kung   New Algorithms and Lower Bounds for the
                                  Parallel Evaluation of Certain Rational
                                  Expressions and Recurrences  . . . . . . 252--261
            Edward M. McCreight   A Space-Economical Suffix Tree
                                  Construction Algorithm . . . . . . . . . 262--272
                   C. T. Yu and   
                  W. S. Luk and   
                   T. Y. Cheung   A Statistical Model for Relevance
                                  Feedback in Information Retrieval  . . . 273--286
             Alan Feldstein and   
                Richard Goodman   Convergence Estimates for the
                                  Distribution of Trailing Digits  . . . . 287--297
                  Donald Fraser   Array Permutation by Index-Digit
                                  Permutation  . . . . . . . . . . . . . . 298--309
                Marcello Pagano   On the Linear Convergence of a
                                  Covariance Factorization Algorithm . . . 310--316
             Ellis Horowitz and   
                   Sartaj Sahni   Exact and Approximate Algorithms for
                                  Scheduling Nonidentical Processors . . . 317--327
            Alan G. Konheim and   
                  Martin Reiser   A Queueing Model with Finite Waiting
                                  Room and Blocking  . . . . . . . . . . . 328--341
                Thomas G. Price   A Note on the Effect of the Central
                                  Processor Service Time Distribution on
                                  Processor Utilization in Multiprogrammed
                                  Computer Systems . . . . . . . . . . . . 342--346
             Donald L. Iglehart   Simulating Stable Stochastic Systems,
                                  VI: Quantile Estimation  . . . . . . . . 347--360
            Kenneth Lloyd Rider   A Simple Approximation to the Average
                                  Queue Size in the Time-Dependent M/M/1
                                  Queue  . . . . . . . . . . . . . . . . . 361--367
         Steven L. Horowitz and   
            Theodosios Pavlidis   Picture Segmentation by a Tree Traversal
                                  Algorithm  . . . . . . . . . . . . . . . 368--388
               Ben Wegbreit and   
                 Jay M. Spitzen   Proving Properties of Complex Data
                                  Structures . . . . . . . . . . . . . . . 389--396

Journal of the ACM
Volume 23, Number 3, July, 1976

         William H. Joyner, Jr.   Resolution Strategies as Decision
                                  Procedures . . . . . . . . . . . . . . . 398--417
                 Lena Chang and   
                 James F. Korsh   Canonical Coin Changing and Greedy
                                  Solutions  . . . . . . . . . . . . . . . 418--422
         Nicholas Pippenger and   
              Leslie G. Valiant   Shifting Graphs and Their Applications   423--432
         Douglas C. Schmidt and   
               Larry E. Druffel   A Fast Backtracking Algorithm to Test
                                  Directed Graphs for Isomorphism Using
                                  Distance Matrices  . . . . . . . . . . . 433--445
                Peter J. Slater   ${R}$-Domination in Graphs . . . . . . . 446--450
               William H. Burge   An Analysis of Binary Search Trees
                                  Formed from Sequences of Nondistinct
                                  Keys . . . . . . . . . . . . . . . . . . 451--454
                     J. R. Cash   Semi-Implicit Runge-Kutta Procedures
                                  with Error Estimates for the Numerical
                                  Integration of Stiff Systems of Ordinary
                                  Differential Equations . . . . . . . . . 455--460
                M. R. Garey and   
                  D. S. Johnson   Scheduling Tasks with Nonuniform
                                  Deadlines on Two Processors  . . . . . . 461--467
                  Ta Huu Phuong   Solution of Integer Programs with a
                                  Quadratic Objective Function . . . . . . 468--474
                  V. Srinivasan   Linear Programming Computational
                                  Procedures for Ordinal Regression  . . . 475--487
                  A. V. Aho and   
                  S. C. Johnson   Optimal Code Generation for Expression
                                  Trees  . . . . . . . . . . . . . . . . . 488--501
                 John Bruno and   
                     Ravi Sethi   Code Generation for a One-Register
                                  Machine  . . . . . . . . . . . . . . . . 502--510
             M. D. Mickunas and   
            R. L. Lancaster and   
                V. B. Schneider   Transforming LR($k$) Grammars To LR(1),
                                  SLR(1), and (1,1) bounded right-context
                                  grammars . . . . . . . . . . . . . . . . 511--533
            David E. Muller and   
            Franco P. Preparata   Restructuring of Arithmetic Expressions
                                  For Parallel Evaluation  . . . . . . . . 534--543
      Christos H. Papadimitriou   On the Complexity of Edge Traversing . . 544--554
               Sartaj Sahni and   
               Teofilo Gonzalez   ${P}$-Complete Approximation Problems    555--565
        Andrew Chi-Chih Yao and   
              Foong Frances Yao   Lower Bounds on Merging Networks . . . . 566--571

Journal of the ACM
Volume 23, Number 4, October, 1976

                 R. A. Cody and   
             E. G. Coffman, Jr.   Errata: ``Record Allocation for
                                  Minimizing Expected Retrieval Costs on
                                  Drum-Like Storage Devices''  . . . . . . 572--572
                 G. E. Peterson   Theorem Proving with Lemmas  . . . . . . 573--581
           Seymour Ginsburg and   
                    Nancy Lynch   Size Complexity in Context-Free Grammar
                                  Forms  . . . . . . . . . . . . . . . . . 582--598
               Yoram Yakimovsky   Boundary and Object Detection in Real
                                  World Images . . . . . . . . . . . . . . 599--618
             Mark J. Eisner and   
            Dennis G. Severance   Mathematical Techniques for Efficient
                                  Record Segmentation in Large Shared
                                  Databases  . . . . . . . . . . . . . . . 619--635
               D. E. Heller and   
            D. K. Stevenson and   
                    J. F. Traub   Accelerated Iterative Methods for the
                                  Solution of Tridiagonal Systems on
                                  Parallel Computers . . . . . . . . . . . 636--654
                  John L. Bruno   Sequencing Jobs with Stochastic Task
                                  Structures on a Single Machine . . . . . 655--664
           Teofilo Gonzalez and   
                   Sartaj Sahni   Open Shop Scheduling to Minimize Finish
                                  Time . . . . . . . . . . . . . . . . . . 665--679
                 Z. Rosberg and   
                       I. Adiri   Multilevel Queues with External
                                  Priorities . . . . . . . . . . . . . . . 680--690
                   Ben Wegbreit   Verifying Program Performance  . . . . . 691--699
                  John P. Hayes   Enumeration of Fanout-Free Boolean
                                  Functions  . . . . . . . . . . . . . . . 700--709
                    S. Even and   
                   R. E. Tarjan   A Combinatorial Problem Which Is
                                  Complete in Polynomial Space . . . . . . 710--719
               R. J. Lipton and   
            S. C. Eisenstat and   
                  R. A. DeMillo   Space and Time Hierarchies for Classes
                                  of Control Structures and Data
                                  Structures . . . . . . . . . . . . . . . 720--732
            M. H. Van Emden and   
                 R. A. Kowalski   The Semantics of Predicate Logic as a
                                  Programming Language . . . . . . . . . . 733--742


Journal of the ACM
Volume 24, Number 1, January, 1977

              Donald B. Johnson   Efficient Algorithms for Shortest Paths
                                  in Sparse Networks . . . . . . . . . . . 1--13
                Neil C. Wilhelm   A General Model for the Performance of
                                  Disk Systems . . . . . . . . . . . . . . 14--31
          Edward C. Horvath and   
                   Shui Lam and   
                     Ravi Sethi   A Level Algorithm for Preemptive
                                  Scheduling . . . . . . . . . . . . . . . 32--43
             R. M. Burstall and   
                John Darlington   A Transformation System for Developing
                                  Recursive Programs . . . . . . . . . . . 44--67
               J. A. Goguen and   
             J. W. Thatcher and   
               E. G. Wagner and   
                   J. B. Wright   Initial Algebra Semantics and Continuous
                                  Algebras . . . . . . . . . . . . . . . . 68--95
                Susan L. Graham   Papers from Third ACM Symposium on
                                  Principles of Programming Languages  . . 96--97
                Brenda S. Baker   An Algorithm for Structuring Flowgraphs  98--120
               David B. Loveman   Program Improvement by Source-to-Source
                                  Transformation . . . . . . . . . . . . . 121--145
                  A. V. Aho and   
              S. C. Johnson and   
                   J. D. Ullman   Code Generation for Expressions with
                                  Common Subexpressions  . . . . . . . . . 146--160
             Phillip D. Summers   A Methodology for LISP Program
                                  Construction from Examples . . . . . . . 161--175

Journal of the ACM
Volume 24, Number 2, April, 1977

        Dennis de Champeaux and   
                     Lenie Sint   An Improved Bidirectional Heuristic
                                  Search Algorithm . . . . . . . . . . . . 177--191
               F. T. Boesch and   
                   J. F. Gimpel   Covering the Points of a Digraph with
                                  Point-Disjoint Paths and Its Application
                                  to Code Optimization . . . . . . . . . . 192--198
        Arnold L. Rosenberg and   
            Larry J. Stockmeyer   Hashing Schemes for Extendible Arrays    199--221
            Alexandre Brandwajn   A Queueing Model of Multiprogrammed
                                  Computer Systems Under Full Load
                                  Conditions . . . . . . . . . . . . . . . 222--240
                    Micha Hofri   On Certain Output-Buffer Management
                                  Techniques --- a Stochastic Model  . . . 241--249
             K. Mani Chandy and   
             John H. Howard and   
              Donald F. Towsley   Product Form and Local Balance in
                                  Queueing Networks  . . . . . . . . . . . 250--263
              Toshihide Ibaraki   The Power of Dominance Relations in
                                  Branch-and-Bound Algorithms  . . . . . . 264--279
            Oscar H. Ibarra and   
                    Chul E. Kim   Heuristic Algorithms for Scheduling
                                  Independent Tasks on Nonidentical
                                  Processors . . . . . . . . . . . . . . . 280--289
              Eric C. R. Hehner   Information Content of Programs and
                                  Operation Encoding . . . . . . . . . . . 290--297
                Philip J. Davis   Proof, Completeness, Transcendentals,
                                  and Sampling . . . . . . . . . . . . . . 298--310
             C. M. Fiduccia and   
                   Y. Zalcstein   Algebras Having Linear Multiplicative
                                  Complexities . . . . . . . . . . . . . . 311--331
              John Hopcroft and   
              Wolfgang Paul and   
                 Leslie Valiant   On Time Versus Space . . . . . . . . . . 332--337
                N. D. Jones and   
                 S. S. Muchnick   Even Simple Programs Are Hard to Analyze 338--350

Journal of the ACM
Volume 24, Number 3, July, 1977

      A. Michael Ballantyne and   
                  W. W. Bledsoe   Automatic Proofs of Theorems in Analysis
                                  Using Nonstandard Techniques . . . . . . 353--374
                Guy Fayolle and   
               Erol Gelenbe and   
             Jacques Labetoulle   Stability and Optimal Control of the
                                  Packet Switching Broadcast Channel . . . 375--386
          Harry B. Hunt III and   
          Daniel J. Rosenkrantz   On Equivalence and Containment Problems
                                  for Formal Languages . . . . . . . . . . 387--396
                   R. Attar and   
                 A. S. Fraenkel   Local Feedback in Full-Text Retrieval
                                  Systems  . . . . . . . . . . . . . . . . 397--417
          Abraham Bookstein and   
                      Don Kraft   Operations Research Applied to Document
                                  Indexing and Retrieval Decisions . . . . 418--427
              Douglas Comer and   
                     Ravi Sethi   The Complexity of Trie Index
                                  Construction . . . . . . . . . . . . . . 428--440
                   K. Hwang and   
                      S. B. Yao   Optimal Batched Searching of Tree
                                  Structured Files in Multiprocessor
                                  Computer Systems . . . . . . . . . . . . 441--454
               R. J. Lipton and   
                      L. Snyder   A Linear Time Algorithm for Deciding
                                  Subject Security . . . . . . . . . . . . 455--464
         Benjamin W. Y. Lin and   
               Ronald L. Rardin   Development of a Parametric Generating
                                  Procedure for Integer Programming Test
                                  Problems . . . . . . . . . . . . . . . . 465--472
                Lawrence T. Kou   On Live-Dead Analysis for Global Data
                                  Flow Problems  . . . . . . . . . . . . . 473--483
               John C. Reynolds   Semantics of the Domain of Flow Diagrams 484--503
                   Ben Wegbreit   Complexity of Synthesizing Inductive
                                  Assertions . . . . . . . . . . . . . . . 504--512
                  L. Hyafil and   
                     H. T. Kung   The Complexity of Parallel Evaluation of
                                  Linear Recurrences . . . . . . . . . . . 513--521
          Richard J. Lipton and   
            Yechezkel Zalcstein   Word Problems Solvable in Logspace . . . 522--526
               K. L. Krause and   
                 V. Y. Shen and   
                H. D. Schwetman   Errata: ``Analysis of Several
                                  Task-Scheduling Algorithms for a Model
                                  of Multiprogramming Computer Systems''   527--527

Journal of the ACM
Volume 24, Number 4, October, 1977

              Robert E. Shostak   On the SUP-INF Method for Proving
                                  Presburger Formulas  . . . . . . . . . . 529--543
              R. A. DeMillo and   
                K. Vairavan and   
             E. Sycara-Cyranski   A Study of Schedules as Models of
                                  Synchronous Parallel Computation . . . . 544--565
                 Mamoru Maekawa   Queueing Models for Computer Systems
                                  Connected by a Communication Line  . . . 566--582
                    Nancy Lynch   Log Space Recognition and Translation of
                                  Parenthesis Languages  . . . . . . . . . 583--590
               Ian F. Blake and   
                Alan G. Konheim   Big Buckets Are (Are Not) Better!  . . . 591--606
                   C. T. Yu and   
                      W. S. Luk   Analysis of Effectiveness of Retrieval
                                  in Clustered Files . . . . . . . . . . . 607--622
                      T. D. Bui   Errata and Comments on a Paper by J. R.
                                  Cash . . . . . . . . . . . . . . . . . . 623--623
         S. E. Sahasrabudhe and   
                 A. D. Kulkarni   On Solving Fredholm Integral Equations
                                  of the First Kind  . . . . . . . . . . . 624--629
          Bharat Kinariwala and   
                      A. G. Rao   Flow Switching Approach to the Maximum
                                  Flow Problem: I  . . . . . . . . . . . . 630--645
              Kenneth J. Omahen   Capacity Bounds for Multiresource Queues 646--663
           Daniel S. Hirschberg   Algorithms for the Longest Common
                                  Subsequence Problem  . . . . . . . . . . 664--675
             Shawpawn Kumar Das   A Machine Representation of Finite
                                  ${T}_0$ Topologies . . . . . . . . . . . 676--692
                     Paul Young   Optimization Among Provably Equivalent
                                  Programs . . . . . . . . . . . . . . . . 693--700


Journal of the ACM
Volume 25, Number 1, January, 1978

                    Y. Perl and   
                    Y. Shiloach   Finding Two Disjoint Paths Between Two
                                  Pairs of Vertices in a Graph . . . . . . 1--9
                 Luigi Logrippo   Renamings and Economy of Memory in
                                  Program Schemata . . . . . . . . . . . . 10--22
                 Ronald V. Book   Simple Representations of Certain
                                  Classes of Languages . . . . . . . . . . 23--31
         Harry B. Hunt, III and   
            Thomas G. Szymanski   Lower Bounds and Reductions Between
                                  Grammar Problems . . . . . . . . . . . . 32--51
                   R. Attar and   
                 Y. Choueka and   
              N. Dershowitz and   
                 A. S. Fraenkel   Kedma --- Linguistic Tools for Retrieval
                                  Systems  . . . . . . . . . . . . . . . . 52--66
               W. S. Cooper and   
                    M. E. Maron   Foundations of Probabilistic and
                                  Utility-Theoretic Indexing . . . . . . . 67--80
                A. H. Sameh and   
                     D. J. Kuck   On Stable Parallel Linear System Solvers 81--91
           Teofilo Gonzalez and   
                   Sartaj Sahni   Preemptive Scheduling of Uniform
                                  Processor Systems  . . . . . . . . . . . 92--101
                  Zvi Galil and   
                  Joel Seiferas   A Linear-Time On-Line Recognition
                                  Algorithm for ``Palstar''  . . . . . . . 102--111
            W. Morven Gentleman   Some Complexity Results for Matrix
                                  Computations on Parallel Processors  . . 112--115
                   O. H. Ibarra   Reversal-Bounded Multicounter Machines
                                  and Their Decision Problems  . . . . . . 116--133
                 Harry R. Lewis   Renaming a Set of Clauses as a Horn Set  134--135
                  C. P. Schnorr   Satisfiability is Quasilinear Complete
                                  in NQL . . . . . . . . . . . . . . . . . 136--145
           Joel I. Seiferas and   
         Michael J. Fischer and   
                Albert R. Meyer   Separating Nondeterministic Time
                                  Complexity Classes . . . . . . . . . . . 146--167
                  Mitchell Wand   A new Incompleteness Result for Hoare's
                                  System . . . . . . . . . . . . . . . . . 168--175

Journal of the ACM
Volume 25, Number 2, April, 1978

              Edward C. Horvath   Stable Sorting in Asymptotically Optimal
                                  Time and Extra Space . . . . . . . . . . 177--199
               Ronald L. Rivest   Optimal Arrangement of Keys in a Hash
                                  Table  . . . . . . . . . . . . . . . . . 200--209
                   C. T. Yu and   
                  G. Salton and   
                      M. K. Siu   Effective Automatic Indexing Using Term
                                  Addition and Deletion  . . . . . . . . . 210--225
        Gérard M. Baudet   Asynchronous Iterative Methods for
                                  Multiprocessors  . . . . . . . . . . . . 226--244
                 H. T. Kung and   
                    J. F. Traub   All Algebraic Functions Can Be Computed
                                  Fast . . . . . . . . . . . . . . . . . . 245--260
                  William McKie   An Example of a Skewing Function . . . . 261--265
                 John M. Mulvey   Pivot Strategies for Primal-Simplex
                                  Network Codes  . . . . . . . . . . . . . 266--270
                David R. Musser   On the Efficiency of a Polynomial
                                  Irreducibility Test  . . . . . . . . . . 271--282
                  K. Omahen and   
                     V. Marathe   Analysis and Applications of the Delay
                                  Cycle for the M/M/C Queueing System  . . 283--303
             Andris A. Zoltners   A Direct Descent Binary Knapsack
                                  Algorithm  . . . . . . . . . . . . . . . 304--311
              Neil D. Jones and   
             Steven S. Muchnick   The Complexity of Finite Memory Programs
                                  with Recursion . . . . . . . . . . . . . 312--321
                    David Maier   The Complexity of Some Problems on
                                  Subsequences and Supersequences  . . . . 322--336
              Andrew C. Yao and   
               Ronald L. Rivest   $k + 1$ Heads Are Better than $k$  . . . 337--340
                   Harrison and   
                          Rubin   Another Generalization of Resolution . . 341--351
            L. H. Landweber and   
                E. L. Robertson   Properties of Conflict-Free and
                                  Persistent Petri Nets  . . . . . . . . . 352--364

Journal of the ACM
Volume 25, Number 3, July, 1978

               D. G. Kafura and   
                     V. Y. Shen   An Algorithm to Design the Memory
                                  Configuration of a Computer Network  . . 365--377
                 Gururaj S. Rao   Performance Analysis of Cache Memories   378--395
                Doron Rotem and   
                    Y. L. Varol   Generation of Binary Trees from Ballot
                                  Sequences  . . . . . . . . . . . . . . . 396--404
               I. H. Sudborough   On the Tape Complexity of Deterministic
                                  Context-Free Languages . . . . . . . . . 405--414
                Herbert S. Wilf   A Global Bisection Algorithm for
                                  Computing the Zeros of Polynomials in
                                  the Complex Plane  . . . . . . . . . . . 415--420
             A. C. McKellar and   
                     C. K. Wong   Dynamic Placement of Records in Linear
                                  Storage  . . . . . . . . . . . . . . . . 421--434
            R. S. Garfinkel and   
                  K. C. Gilbert   The Bottleneck Traveling Salesman
                                  Problem: Algorithms and Probabilistic
                                  Analysis . . . . . . . . . . . . . . . . 435--448
         Donald L. Iglehart and   
              Gerald S. Shedler   Regenerative Simulation of Response
                                  Times in Networks of Queues  . . . . . . 449--460
                 C. A. R. Hoare   Some Properties of Predicate
                                  Transformers . . . . . . . . . . . . . . 461--480
                  Jon T. Butler   Analysis and Design of Fanout-Free
                                  Networks of Positive Symmetric Gates . . 481--498
                M. R. Garey and   
                  D. S. Johnson   ``Strong'' NP-Completeness Results:
                                  Motivation, Examples, and Implications   499--508
             Nicholas Pippenger   A Time-Space Trade-Off . . . . . . . . . 509--515

Journal of the ACM
Volume 25, Number 4, October, 1978

                  Alon Itai and   
              Michael Rodeh and   
             Steven L. Tanimoto   Some Matching Problems for Bipartite
                                  Graphs . . . . . . . . . . . . . . . . . 517--525
                Brian Allen and   
                      Ian Munro   Self-Organizing Binary Search Trees  . . 526--535
              J. L. Bentley and   
                 H. T. Kung and   
              M. Schkolnick and   
                 C. D. Thompson   On the Average Number of Maxima in a Set
                                  of Vectors and Applications  . . . . . . 536--543
                  Leo J. Guibas   The Analysis of Hashing Techniques that
                                  Exhibit $k$-ary Clustering . . . . . . . 544--555
          Donald B. Johnson and   
              Samuel D. Kashdan   Lower Bounds for Selection in ${X} +
                                  {Y}$ and Other Multisets . . . . . . . . 556--570
         S. Crespi-Reghizzi and   
                   G. Guida and   
                   D. Mandrioli   Noncounting Context-Free Languages . . . 571--580
                R. P. Brent and   
                     H. T. Kung   Fast Algorithms for Manipulating Formal
                                  Power Series . . . . . . . . . . . . . . 581--595
                      Alon Itai   Two-Commodity Flow . . . . . . . . . . . 596--611
               E. L. Lawler and   
                  J. Labetoulle   On Preemptive Scheduling of Unrelated
                                  Parallel Processors by Linear
                                  Programming  . . . . . . . . . . . . . . 612--619
            Hendrik Vantilborgh   Exact Aggregation in Exponential
                                  Queueing Networks  . . . . . . . . . . . 620--629
                   Daniel Brand   Path Calculus in Program Verification    630--651
            Peter J. Downey and   
                     Ravi Sethi   Assignment Commands with Array
                                  References . . . . . . . . . . . . . . . 652--666
                     Ravi Sethi   Conditional Expressions with Equality
                                  Tests  . . . . . . . . . . . . . . . . . 667--674
            A. C. Arvillias and   
                 D. G. Maritsas   Partitioning the Period of a Class of
                                  $m$-Sequences and Application to
                                  Pseudorandom Number Generation . . . . . 675--686


Journal of the ACM
Volume 26, Number 4, October, 1978

            H. B. Hunt, III and   
                T. G. Szymanski   Corrigendum: ``Lower Bounds and
                                  Reductions Between Grammar Problems''    687--688

Journal of the ACM
Volume 26, Number 1, January, 1979

               Rainer Parchmann   Control System Model for Critically
                                  Timed Sources  . . . . . . . . . . . . . 1--5
                 Alan Jay Smith   Characterizing the Storage Process and
                                  its Effect on the Update of Main Memory
                                  by Write Through . . . . . . . . . . . . 6--27
              Udaiprakash Gupta   Bounds on Storage for Consecutive
                                  Retrieval  . . . . . . . . . . . . . . . 28--36
           Alberto O. Mendelzon   On Axiomatizing Multivalued Dependencies
                                  in Relational Databases  . . . . . . . . 37--44
                Steven P. Reiss   Security in Databases; A Combinatorial
                                  Study  . . . . . . . . . . . . . . . . . 45--57
                  Zvi Galil and   
                 Nimrod Megiddo   A Fast Selection Algorithm and the
                                  Problem of Optimum Distribution of
                                  Effort . . . . . . . . . . . . . . . . . 58--64
             James M. Lemme and   
                   John R. Rice   Speedup in Parallel Algorithms for
                                  Adaptive Quadrature  . . . . . . . . . . 65--71
          Garry H. Rodrigue and   
             Niel K. Madsen and   
                 Jack I. Karush   Odd-Even Reductions for Banded Linear
                                  Equations  . . . . . . . . . . . . . . . 72--81
          George S. Fishman and   
                 Louis R. Moore   Estimating the Mean of a Correlated
                                  Binary Sequence with an Application to
                                  Discrete Event Simulation  . . . . . . . 82--94
      Christos H. Papadimitriou   Optimality of the Fast Fourier Transform 95--102
          Walter J. Savitch and   
             Michael J. Stimson   Time Bounded Random Access Machines with
                                  Parallel Processing  . . . . . . . . . . 103--118
        John C. Cherniavsky and   
                Samuel N. Kamin   A Complete and Consistent Hoare
                                  Axiomatics for a Simple Programming
                                  Language . . . . . . . . . . . . . . . . 119--128
      Edmund Melson Clarke, Jr.   Programming Language Constructs for
                                  Which It Is Impossible To Obtain Good
                                  Hoare Axiom Systems  . . . . . . . . . . 129--147
        Gérard Berry and   
       Jean-Jacques Lévy   Minimal and Optimal Computations of
                                  Recursive Programs . . . . . . . . . . . 148--175

Journal of the ACM
Volume 26, Number 2, April, 1979

                    F. K. Hwang   An $O(n \log n)$ Algorithm for
                                  Rectilinear Minimal Spanning Tree  . . . 177--182
           George S. Lueker and   
               Kellogg S. Booth   A Linear Time Algorithm for Deciding
                                  Interval Graph Isomorphism . . . . . . . 183--195
                    Azad Bolour   Optimality Properties of Multiple-Key
                                  Hashing Functions  . . . . . . . . . . . 196--210
              Mark R. Brown and   
               Robert E. Tarjan   A Fast Merging Algorithm . . . . . . . . 211--226
          Frank Fussenegger and   
                Harold N. Gabow   A Counting Approach to Lower Bounds for
                                  Selection Problems . . . . . . . . . . . 227--238
              Boleslaw Kacewicz   Integrals with a Kernel in the Solution
                                  of Nonlinear Equations in ${N}$
                                  Dimensions . . . . . . . . . . . . . . . 239--249
                J. F. Traub and   
              H. Wo\'zniakowski   Convergence and Complexity of Newton
                                  Iteration for Operator Equations . . . . 250--258
                   Erol Gelenbe   On the Optimum Checkpoint Interval . . . 259--270
         Donald L. Iglehart and   
              Peter A. W. Lewis   Regenerative Simulation with Internal
                                  Controls . . . . . . . . . . . . . . . . 271--282
             Tomasz Kowaltowski   Data Structures and Correctness of
                                  Programs . . . . . . . . . . . . . . . . 283--301
               George Milne and   
                   Robin Milner   Concurrent Processes and Their Syntax    302--321
                 Barry K. Rosen   Data Flow Analysis for Procedural
                                  Languages  . . . . . . . . . . . . . . . 322--344
                   K. Culik, II   A Purely Homomorphic Characterization of
                                  Recursively Enumerable Sets  . . . . . . 345--350
              Robert E. Shostak   A Practical Decision Procedure for
                                  Arithmetic with Function Symbols . . . . 351--360
         Nicholas Pippenger and   
             Michael J. Fischer   Relations Among Complexity Measures  . . 361--381
                      Anonymous   Corrigendum: ``Papers from the Fourth
                                  ACM Symposium on Principles of
                                  Programming Languages''  . . . . . . . . 382--382

Journal of the ACM
Volume 26, Number 3, July, 1979

                 L. J. Henschen   Theorem Proving by Covering Expressions  385--400
              Jacques Cohen and   
                 Timothy Hickey   Two Algorithms for Determining Volumes
                                  of Convex Polyhedra  . . . . . . . . . . 401--414
                  D. T. Lee and   
                F. P. Preparata   An Optimal Algorithm for Finding the
                                  Kernel of a Polygon  . . . . . . . . . . 415--421
                  Kuo-Chung Tai   The Tree-to-Tree Correction Problem  . . 422--433
              Glenn K. Manacher   Significant Improvements to the
                                  Hwang-Lin Merging Algorithm  . . . . . . 434--440
              Glenn K. Manacher   The Ford-Johnson Sorting Algorithm Is
                                  Not Optimal  . . . . . . . . . . . . . . 441--456
               H. R. Strong and   
               G. Markowsky and   
                  A. K. Chandra   Search Within a Page . . . . . . . . . . 457--482
                      T. D. Bui   Some ${A}$-Stable and ${L}$-Stable
                                  Methods for the Numerical Integration of
                                  Stiff Ordinary Differential Equations    483--493
                Robert D. Skeel   Scaling for Numerical Stability in
                                  Gaussian Elimination . . . . . . . . . . 494--526
            Arthur G. Werschulz   Maximal Order and Order of Information
                                  for Numerical Quadrature . . . . . . . . 527--537
           Greg N. Frederickson   Approximation Algorithms for Some
                                  Postman Problems . . . . . . . . . . . . 538--554
            Brenda S. Baker and   
                S. Rao Kosaraju   A Comparison of Multilevel break and
                                  next Statements  . . . . . . . . . . . . 555--566
            Eitan M. Gurari and   
                Oscar H. Ibarra   An NP-Complete Number-Theoretic Problem  567--581
                   Zvi M. Kedem   Combining Dimensionality and Rate of
                                  Growth Arguments for Establishing Lower
                                  Bounds on the Number of Multiplications
                                  and Divisions  . . . . . . . . . . . . . 582--601

Journal of the ACM
Volume 26, Number 4, October, 1979

                   T. Beyer and   
                   W. Jones and   
                    S. Mitchell   Linear Algorithms for Isomorphism of
                                  Maximal Outerplanar Graphs . . . . . . . 603--610
          Jonathan L. Gross and   
                Ronald H. Rosen   A Linear Time Planarity Algorithm for
                                  $2$-Complexes  . . . . . . . . . . . . . 611--617
             Mihalis Yannakakis   The Effect of a Connectivity Requirement
                                  on the Complexity of Maximum Subgraph
                                  Problems . . . . . . . . . . . . . . . . 618--630
      Christos H. Papadimitriou   The Serializability of Concurrent
                                  Database Updates . . . . . . . . . . . . 631--653
             Haim Mendelson and   
                   Uri Yechiali   Performance Measures for Ordered Lists
                                  in Random-Access Files . . . . . . . . . 654--667
            Arnold L. Rosenberg   Encoding Data Structures in Trees  . . . 668--689
            Robert Endre Tarjan   Applications of Path Compression on
                                  Balanced Trees . . . . . . . . . . . . . 690--715
      Joaquín Bustoz and   
             Alan Feldstein and   
            Richard Goodman and   
               Seppo Linnainmaa   Improved Trailing Digits Estimates
                                  Applied to Optimal Computer Arithmetic   716--730
                  J. C. Butcher   A Transformed Implicit Runge-Kutta
                                  Method . . . . . . . . . . . . . . . . . 731--738
          Donald B. Johnson and   
                Webb Miller and   
             Brian Minnihan and   
                 Celia Wrathall   Reducibility Among Floating-Point Graphs 739--760
            U. Narayan Bhat and   
               Richard E. Nance   An Evaluation of CPU Efficiency Under
                                  Dynamic Quantum Allocation . . . . . . . 761--778
              Andrew S. Noetzel   A generalized queueing discipline for
                                  product form network solutions . . . . . 779--793
                   Robin Milner   Flowgraphs and Flow Algebras . . . . . . 794--818
                 Luigi Logrippo   Renamings, Maximal Parallelism, and
                                  Space-Time Tradeoff in Program Schemata  819--833


Journal of the ACM
Volume 27, Number 1, January, 1980

           Andrzej Proskurowski   On the Generation of Binary Trees  . . . 1--2
             Marvin Solomon and   
              Raphael A. Finkel   A Note on Enumerating Binary Trees . . . 3--5
              David Nassimi and   
                   Sartaj Sahni   An Optimal Routing Algorithm for
                                  Mesh-Connected Parallel Computers  . . . 6--29
          Krzysztof Pawlikowski   Message Waiting Time in a Packet
                                  Switching System . . . . . . . . . . . . 30--41
                 G. Boyd Swartz   Polling in a Loop System . . . . . . . . 42--59
         Peter B. Henderson and   
            Yechezkel Zalcstein   Synchronization Problems Solvable by
                                  Generalized PV Systems . . . . . . . . . 60--71
       Abraham Silberschatz and   
                      Zvi Kedem   Consistency in Hierarchical Database
                                  Systems  . . . . . . . . . . . . . . . . 72--80
          Richard J. Lipton and   
        Arnold L. Rosenberg and   
                  Andrew C. Yao   External Hashing Schemes for Collections
                                  of Data Structures . . . . . . . . . . . 81--95
           Joost Engelfriet and   
      Erik Meineche Schmidt and   
                Jan van Leeuwen   Stack Machines and Classes of Nonnested
                                  Macro Languages  . . . . . . . . . . . . 96--117
               Ravindran Kannan   A Polynomial Algorithm for the
                                  Two-Variable Integer Programming Problem 118--122
         Richard A. DeMillo and   
       Stanley C. Eisenstat and   
              Richard J. Lipton   Space-Time Trade-Offs in Structured
                                  Programming: An Improved Combinatorial
                                  Embedding Theorem  . . . . . . . . . . . 123--127
             Marc A. Kaplan and   
              Jeffrey D. Ullman   A Scheme for the Automatic Inference of
                                  Variable Types . . . . . . . . . . . . . 128--145
         Bhaskaram Prabhala and   
                     Ravi Sethi   Efficient Computation of Expressions
                                  with Common Subexpressions . . . . . . . 146--163
                  Mitchell Wand   Continuation-Based Program
                                  Transformation Strategies  . . . . . . . 164--180
               Edward A. Bender   The Number of Fanout-Free Functions with
                                  Various Gates  . . . . . . . . . . . . . 181--190
            Norihisa Suzuki and   
                David Jefferson   Verification Decidability of Pressburger
                                  Array Programs . . . . . . . . . . . . . 191--205

Journal of the ACM
Volume 27, Number 2, April, 1980

            Andrew Chi-Chih Yao   New Algorithms for Bin Packing . . . . . 207--227
                   M. Pease and   
                 R. Shostak and   
                     L. Lamport   Reaching Agreements in the Presence of
                                  Faults . . . . . . . . . . . . . . . . . 228--234
                 Raymond Reiter   Equality and Domain Closure for
                                  First-Order Databases  . . . . . . . . . 235--249
                 Yehoshua Sagiv   An Algorithm for Inferring Multivalued
                                  Dependencies with an Application to
                                  Propositional Logic  . . . . . . . . . . 250--262
              G. W. Wasilkowski   Can Any Stationary Iteration Using
                                  Linear Information be Globally
                                  Convergent?  . . . . . . . . . . . . . . 263--269
                    Tiko Kameda   Testing Deadlock-Freedom of Computer
                                  Systems  . . . . . . . . . . . . . . . . 270--280
                    We-Min Chow   The Cycle Time Distribution of
                                  Exponential Cyclic Queues  . . . . . . . 281--286
        Teofilo F. Gonzalez and   
              Donald B. Johnson   A New Algorithm for Preemptive
                                  Scheduling of Trees  . . . . . . . . . . 287--312
                  M. Reiser and   
                S. S. Lavenberg   Mean-Value Analysis of Closed Multichain
                                  Queuing Networks . . . . . . . . . . . . 313--322
                    Don Towsley   Queuing Network Models with
                                  State-Dependent Routing  . . . . . . . . 323--337
  Ramachandran Krishnaswamy and   
               Arthur B. Pyster   On the Correctness of
                                  Semantic-Syntax-Directed Translations    338--355
                Greg Nelson and   
                 Derek C. Oppen   Fast Decision Procedures Based on
                                  Congruence Closure . . . . . . . . . . . 356--364
            Stephen A. Ward and   
        Robert H. Halstead, Jr.   A Syntactic Theory of Message Passing    365--383
                 Harold Abelson   Lower Bounds on Information Transfer in
                                  Distributed Computations . . . . . . . . 384--392
         David Lichtenstein and   
                 Michael Sipser   GO is Polynomial-Space Hard  . . . . . . 393--401
                   R. Parchmann   Corrigendum: ``Control System Model for
                                  Critically Timed Sources'' . . . . . . . 402--402

Journal of the ACM
Volume 27, Number 3, July, 1980

                 Derek C. Oppen   Reasoning About Recursively Defined Data
                                  Structures . . . . . . . . . . . . . . . 403--411
            Doris Altenkamp and   
                  Kurt Mehlhorn   Codes: Unequal Probabilities, Unequal
                                  Letter Costs . . . . . . . . . . . . . . 412--427
           Ronald L. Graham and   
              Andrew C. Yao and   
                 F. Frances Yao   Information Bounds Are Weak in the
                                  Shortest Distance Problem  . . . . . . . 428--444
                 Yossi Shiloach   A Polynomial Solution in the Undirected
                                  Two Paths Problem  . . . . . . . . . . . 445--456
          Kishor S. Trivedi and   
           Robert A. Wagner and   
              Timothy M. Sigmon   Optimal Selection of CPU Speed, Device
                                  Capacities, and File Assignments . . . . 457--473
             Haim Mendelson and   
                   Uri Yechiali   A New Approach to the Analysis of Linear
                                  Probing Schemes  . . . . . . . . . . . . 474--483
           Fred G. Abramson and   
             Yuri Breitbart and   
                Forbes D. Lewis   Complex Properties of Grammars . . . . . 484--498
              J. Engelfriet and   
                   G. Rozenberg   Fixed Point Languages, Equality
                                  Languages, and Representation of
                                  Recursively Enumerable Languages . . . . 499--518
                 G. Fayolle and   
                 I. Mitrani and   
               R. Iasnogorodski   Sharing a Processor Among Many Job
                                  Classes  . . . . . . . . . . . . . . . . 519--532
  Christos H. Papadimitriou and   
            Paris C. Kanellakis   Flowshop Scheduling with Limited
                                  Temporary Storage  . . . . . . . . . . . 533--549
               Sartaj Sahni and   
                     Yookun Cho   Scheduling Independent Tasks with Due
                                  Times on a Uniform Processor System  . . 550--563
               Carlo Ghezzi and   
                 Dino Mandrioli   Augmenting Parsers to Support
                                  Incrementality . . . . . . . . . . . . . 564--579
                 Ravi Sethi and   
                    Adrian Tang   Constructing Call-by-value Continuation
                                  Semantics  . . . . . . . . . . . . . . . 580--597

Journal of the ACM
Volume 27, Number 4, October, 1980

            Alan R. Aronson and   
            Barry E. Jacobs and   
                    Jack Minker   A Note on Fuzzy Deduction  . . . . . . . 599--603
                      D. T. Lee   Two-dimensional Voronoi diagrams in the
                                  $L_p$-metric . . . . . . . . . . . . . . 604--618
               S. Tsukiyama and   
               I. Shirakawa and   
                   H. Ozaki and   
                    H. Ariyoshi   An Algorithm to Enumerate All Cutsets of
                                  a Graph in Linear Time per Cutset  . . . 619--632
             Yehoshua Sagiv and   
             Mihalis Yannakakis   Equivalences Among Relational
                                  Expressions with the Union and
                                  Difference Operators . . . . . . . . . . 633--655
             A. Ehrenfeucht and   
                   G. Rozenberg   The Sequence Equivalence Problem Is
                                  Decidable for 0S Systems . . . . . . . . 656--663
                    David Maier   Minimum Covers in the Relational
                                  Database Model . . . . . . . . . . . . . 664--674
             S. A. Greibach and   
                 E. P. Friedman   Superdeterministic PDAs: A Subclass with
                                  a Decidable Inclusion Problem  . . . . . 675--700
                 J. T. Schwartz   Fast Probabilistic Algorithms for
                                  Verification of Polynomial Identities    701--717
         Marshall L. Fisher and   
              Dorit S. Hochbaum   Database Location in Computer Networks   718--735
             K. G. Ramakrishnan   Solving Two-Commodity Transportation
                                  Problems with Coupling Constraints . . . 736--757
            Peter J. Downey and   
                 Ravi Sethi and   
            Robert Endre Tarjan   Variations on the Common Subexpression
                                  Problem  . . . . . . . . . . . . . . . . 758--771
         Jean-Claude Raoult and   
                 Jean Vuillemin   Operational and Semantic Equivalence
                                  Between Recursive Programs . . . . . . . 772--796
             Gérard Huet   Confluent Reductions: Abstract
                                  Properties and Applications to Term
                                  Rewriting Systems  . . . . . . . . . . . 797--821
                  Joseph Ja'Ja'   Computation of Bilinear Forms over
                                  Finite Fields  . . . . . . . . . . . . . 822--830
          Richard E. Ladner and   
             Michael J. Fischer   Parallel Prefix Computation  . . . . . . 831--838
          Rüdiger Reischuk   Improved Bounds on the Problem of
                                  Time-Space Trade-Off in the Pebble Game  839--849


Journal of the ACM
Volume 28, Number 1, January, 1981

                Shimon Even and   
                 Yossi Shiloach   An On-Line Edge-Deletion Problem . . . . 1--4
              Yehoshua Perl and   
              Stephen R. Schach   Max-Min Tree Partitioning  . . . . . . . 5--15
              Michael Rodeh and   
           Vaughan R. Pratt and   
                    Shimon Even   Linear Algorithm for Data Compression
                                  via String Matching  . . . . . . . . . . 16--24
        Philip A. Bernstein and   
               Dah-Ming W. Chiu   Using Semi-Joins to Solve Relational
                                  Queries  . . . . . . . . . . . . . . . . 25--40
             Witold Lipski, Jr.   On Databases with Incomplete Information 41--70
              G. W. Wasilkowski   $n$-Evaluation Conjecture for Multipoint
                                  Iterations for the Solution of Scalar
                                  Nonlinear Equations  . . . . . . . . . . 71--80
          James O. Achugbue and   
                Francis Y. Chin   Bounds on Schedules for Independent
                                  Tasks with Similar Execution Times . . . 81--99
                   J. Bruno and   
                  P. Downey and   
             G. N. Frederickson   Sequencing Tasks with Exponential
                                  Service Times to Minimize the Expected
                                  Flow Time or Makespan  . . . . . . . . . 100--113
           Ashok K. Chandra and   
            Dexter C. Kozen and   
            Larry J. Stockmeyer   Alternation  . . . . . . . . . . . . . . 114--133
                       Z. Galil   String Matching in Real Time . . . . . . 134--149
           David G. Kirkpatrick   A Unified Lower Bound for Selection and
                                  Set Partitioning Problems  . . . . . . . 150--165
            Benton L. Leong and   
               Joel I. Seiferas   New Real-Time Simulations of Multihead
                                  Tape Units . . . . . . . . . . . . . . . 166--180
            John H. Rowland and   
                Philip J. Davis   On the Use of Transcendentals for
                                  Program Testing  . . . . . . . . . . . . 181--190

Journal of the ACM
Volume 28, Number 2, April, 1981

               Peter B. Andrews   Theorem Proving by Matings . . . . . . . 193--214
               Prabhaker Mateti   A Decision Procedure for the Correctness
                                  of a Class of Programs . . . . . . . . . 215--222
         Gerald E. Peterson and   
                Mark E. Stickel   Complete Sets of Reductions for Some
                                  Equational Theories  . . . . . . . . . . 223--264
                      C. K. Chu   A Note on Multiple Error Detection in
                                  ASCII Numeric Data Communication . . . . 265--269
          Kishor S. Trivedi and   
              Timothy M. Sigmon   Optimal Design of Linear Storage
                                  Hierarchies  . . . . . . . . . . . . . . 270--288
               Gaston H. Gonnet   Expected Length of the Longest Probe
                                  Sequence in Hash Code Searching  . . . . 289--304
                   Michael Karr   Summation in Finite Terms  . . . . . . . 305--350
              R. M. Feldman and   
               G. W. Adkins and   
                G. L. Curry and   
                    U. W. Pooch   Measurement Bias in Feedback Queues  . . 351--357
               K. C. Sevcik and   
                     I. Mitrani   The Distribution of Queuing Network
                                  States at Input and Output Instants  . . 358--371
                   C. J. Hogger   Derivation of Logic Programs . . . . . . 372--392
                     Martin Rem   The Closure Statement: A Programming
                                  Language Construct Allowing
                                  Ultraconcurrent Execution  . . . . . . . 393--410
           K. J. Lieberherr and   
                     E. Specker   Complexity of Partial Satisfaction . . . 411--421
                Mark E. Stickel   A Unification Algorithm for
                                  Associative-Commutative Functions  . . . 423--434
            Francis Y. Chin and   
                 Long-Lieh Tsai   On ${J}$-maximal and ${J}$-minimal
                                  Flow-Shop Schedules  . . . . . . . . . . 462--476

Journal of the ACM
Volume 28, Number 3, July, 1981

             Yehoshua Sagiv and   
             Claude Delobel and   
       D. Stott Parker, Jr. and   
                   Ronald Fagin   An Equivalence Between Relational
                                  Database Dependencies and a Fragment of
                                  Propositional Logic  . . . . . . . . . . 435--453
               David Dobkin and   
                   J. Ian Munro   Optimal Time Minimal Space Selection
                                  Algorithms . . . . . . . . . . . . . . . 454--461
            Francis Y. Chin and   
                 Long Lieh Tsai   On J-Maximal and J-Minimal Flow-Shop
                                  Schedules  . . . . . . . . . . . . . . . 462--476
          Leonard Kleinrock and   
                   Arne Nilsson   On Optimal Scheduling Algorithms for
                                  Time-Shared Systems  . . . . . . . . . . 477--486
                    Hanan Samet   Connected Component Labeling Using
                                  Quadtrees  . . . . . . . . . . . . . . . 487--501
     Sarangan Krishna Kumar and   
               Melvin A. Breuer   Probabilistic Aspects of Boolean
                                  Switching Functions via a New Transform  502--520
                R. P. Brent and   
                     H. T. Kung   The Area-Time Complexity of Binary
                                  Multiplication . . . . . . . . . . . . . 521--534
            Eitan M. Gurari and   
                Oscar H. Ibarra   The Complexity of the Equivalence
                                  Problem for Simple Programs  . . . . . . 535--560
              Ernst W. Mayr and   
                Albert R. Meyer   The Complexity of the Finite Containment
                                  Problem for Petri Nets . . . . . . . . . 561--576
            Robert Endre Tarjan   A Unified Approach to Path Problems  . . 577--593
            Robert Endre Tarjan   Fast Algorithms for Solving Path
                                  Problems . . . . . . . . . . . . . . . . 594--614
            Andrew Chi Chih Yao   Should Tables Be Sorted? . . . . . . . . 615--628
                  M. Reiser and   
                S. S. Lavenberg   Corrigendum: ``Mean-Value Analysis of
                                  Closed Multichain Queuing Networks'' . . 629--629

Journal of the ACM
Volume 28, Number 4, October, 1981

                 Wolfgang Bibel   On Matrices with Connections . . . . . . 633--645
             D. W. Loveland and   
                    C. R. Reddy   Deleting Repeated Goals in the Problem
                                  Reduction Format . . . . . . . . . . . . 646--661
                   Guy Latouche   Algorithmic Analysis of a
                                  Multiprogramming-Multiprocessor Computer
                                  System . . . . . . . . . . . . . . . . . 662--679
                David Maier and   
             Yehoshua Sagiv and   
             Mihalis Yannakakis   On the Complexity of Testing
                                  Implications of Functional and Join
                                  Dependencies . . . . . . . . . . . . . . 680--695
             Michael L. Fredman   A Lower Bound on the Complexity of
                                  Orthogonal Range Queries . . . . . . . . 696--705
             A. Ehrenfeucht and   
               G. Rozenberg and   
                    K. Ruohonen   A Morphic Representation of Complements
                                  of Recursively Enumerable Sets . . . . . 706--714
                 Mehdi Jazayeri   A Simpler Construction for Showing the
                                  Intrinsically Exponential Complexity of
                                  the Circularity Problem for Attribute
                                  Grammars . . . . . . . . . . . . . . . . 715--720
               Ernest Davis and   
               Jeffrey M. Jaffe   Algorithms for Scheduling Tasks on
                                  Unrelated Processors . . . . . . . . . . 721--736
             Stefania Gnesi and   
              Ugo Montanari and   
               Alberto Martelli   Dynamic Programming as Graph Searching:
                                  An Algebraic Approach  . . . . . . . . . 737--751
                   N. Katoh and   
                 T. Ibaraki and   
                        H. Mine   An Algorithm for the ${K}$ Best
                                  Solutions of the Resource Allocation
                                  Problem  . . . . . . . . . . . . . . . . 752--764
      Christos H. Papadimitriou   On the Complexity of Integer Programming 765--768
                 Robert Shostak   Deciding Linear Inequalities by
                                  Computing Loop Residues  . . . . . . . . 769--779
            Andrew Chi-Chih Yao   A Lower Bound to Finding Convex Hulls    780--787


Journal of the ACM
Volume 29, Number 1, January, 1982

            George W. Ernst and   
           Michael M. Goldstein   Mechanical Discovery of Classes of
                                  Problem-Solving Strategies . . . . . . . 1--23
              Eugene C. Freuder   A Sufficient Condition of Backtrack-Free
                                  Search . . . . . . . . . . . . . . . . . 24--32
                 Drew McDermott   Nonmonotonic Logic II: Nonmonotonic
                                  Modal Theories . . . . . . . . . . . . . 33--57
           Ronald I. Becker and   
          Stephen R. Schach and   
                  Yehoshua Perl   A Shifting Algorithm for Min-Max Tree
                                  Partitioning . . . . . . . . . . . . . . 58--67
      Christoph M. Hoffmann and   
           Michael J. O'Donnell   Pattern Matching in Trees  . . . . . . . 68--95
                      Zvi Galil   An Almost Linear-Time Algorithm for
                                  Computing a Dependency Basis in a
                                  Relational Database  . . . . . . . . . . 96--102
             Yehoshua Sagiv and   
               Scott F. Walecka   Subset Dependencies and a Completeness
                                  Result for a Subclass of Embedded
                                  Multivalued Dependencies . . . . . . . . 103--117
               H. A. Maurer and   
                 A. Salomaa and   
                        D. Wood   Dense Hierarchies of Grammatical
                                  Families . . . . . . . . . . . . . . . . 118--126
                    D. Chow and   
                       C. T. Yu   On the Construction of Feedback Queries  127--151
                   C. T. Yu and   
                     K. Lam and   
                      G. Salton   Term Weighting in Information Retrieval
                                  Using the Term Precision Model . . . . . 152--170
                 Ronald V. Book   Confluent and Other Types of Thue
                                  Systems  . . . . . . . . . . . . . . . . 171--182
             James E. Burns and   
               Paul Jackson and   
             Nancy A. Lynch and   
         Michael J. Fischer and   
               Gary L. Peterson   Data Requirements for Implementation of
                                  ${N}$-Process Mutual Exclusion Using a
                                  Single Shared Variable . . . . . . . . . 183--205
                   H.-D. Ehrich   On the Theory of Specification,
                                  Implementation, and Parametrization of
                                  Abstract Data Types  . . . . . . . . . . 206--227
                H. B. Hunt, III   On the Complexity of Flowchart and Loop
                                  Program Schemes and Programming
                                  Languages  . . . . . . . . . . . . . . . 228--249
             Michael L. Fredman   The Complexity of Maintaining an Array
                                  and Computing Its Partial Sums . . . . . 250--260
                Charles Rackoff   Relativized Questions Involving
                                  Probabilistic Algorithms . . . . . . . . 261--268

Journal of the ACM
Volume 29, Number 2, April, 1982

                   Steve Winker   Generation and Verification of Finite
                                  Models and Counterexamples Using an
                                  Automated Theorem Prover Answering Two
                                  Open Questions . . . . . . . . . . . . . 273--284
  Christos H. Papadimitriou and   
             Mihalis Yannakakis   The Complexity of Restricted Spanning
                                  Tree Problems  . . . . . . . . . . . . . 285--309
                Barry E. Jacobs   On Database Logic  . . . . . . . . . . . 310--332
                 Y. Edmund Lien   On the Equivalence of Database Models    333--362
            Fereidoon Sadri and   
              Jeffrey D. Ullman   Template Dependencies: A Large Class of
                                  Dependencies in Relational Databases and
                                  Its Complete Axiomatization  . . . . . . 363--372
                  Edward Sciore   A Complete Axiomatization of Full Join
                                  Dependencies . . . . . . . . . . . . . . 373--393
                     Ravi Sethi   Useless Actions Make a Difference:
                                  Strict Serializability of Database
                                  Updates  . . . . . . . . . . . . . . . . 394--403
          Christopher Bader and   
                  Arnaldo Moura   A Generalization of Ogden's Lemma  . . . 404--406
              Jacques Cohen and   
             Timothy Hickey and   
                   Joel Katcoff   Upper Bounds for Speedup in Parallel
                                  Parsing  . . . . . . . . . . . . . . . . 408--428
                H. B. Hunt, III   On the Decidability of Grammar Problems  429--447
                 Theodore Brown   Determination of the Conditional
                                  Response for Quantum Allocation
                                  Algorithms . . . . . . . . . . . . . . . 448--460
                   R. M. Bryant   Maximum Processing Rates of Memory Bound
                                  Systems  . . . . . . . . . . . . . . . . 461--477
                   Hisao Kameda   A Finite-Source Queue with Different
                                  Customers  . . . . . . . . . . . . . . . 478--491
                   Simon S. Lam   Dynamic Scaling and Growth Behavior of
                                  Queuing Network Normalization Constants  492--513
             Manfred Ruschitzka   The Performance of Job Classes with
                                  Distinct Policy Functions  . . . . . . . 514--526
              Percy Tzelnic and   
                 Izidor Gertner   An Approach to Program Behavior Modeling
                                  and Optimal Memory Control . . . . . . . 525--554
            Albert R. Meyer and   
              Joseph Y. Halpern   Axiomatic Definitions of Programming
                                  Languages: A Theoretical Assessment  . . 555--576
           Michael A. Arbib and   
                Ernest G. Manes   The Pattern-of-Calls Expansion Is the
                                  Canonical Fixpoint for Recursive
                                  Definitions  . . . . . . . . . . . . . . 577--602

Journal of the ACM
Volume 29, Number 3, July, 1982

            Robert W. Floyd and   
              Jeffrey D. Ullman   The Compilation of Regular Expressions
                                  into Integrated Circuits . . . . . . . . 603--622
              K. Takamizawa and   
               T. Nishizeki and   
                       N. Saito   Linear-Time Computability of
                                  Combinatorial Problems in
                                  Series-Parallel Graphs . . . . . . . . . 623--641
              David Nassimi and   
                   Sartaj Sahni   Parallel Permutation and Sorting
                                  Algorithms and a New Generalized
                                  Connection Network . . . . . . . . . . . 642--667
                 Peter Honeyman   Testing Satisfaction of Functional
                                  Dependencies . . . . . . . . . . . . . . 668--677
           Seymour Ginsburg and   
          Sami Mohammed Zaiddan   Properties of Functional-Dependency
                                  Families . . . . . . . . . . . . . . . . 678--698
                   Anthony Klug   Equivalence of Relational Algebra and
                                  Relational Calculus Query Languages
                                  Having Aggregate Functions . . . . . . . 699--717
             Mihalis Yannakakis   A Theory of Safe Locking Policies in
                                  Database Systems . . . . . . . . . . . . 718--740
                   Dana Angluin   Inference of Reversible Languages  . . . 741--765
                Harold N. Gabow   An Almost-Linear Algorithm for
                                  Two-Processor Scheduling . . . . . . . . 766--780
                 Errol L. Lloyd   Critical Path Scheduling with Resource
                                  and Processor Constraints  . . . . . . . 781--811
                 Charles Martel   Preemptive Scheduling with Release
                                  Times, Deadlines, and Due Times  . . . . 812--829
    Christopher L. Samelson and   
             William G. Bulgren   A Note on Product-Form Solution for
                                  Queuing Networks with Poisson Arrivals
                                  and General Service-Time Distributions
                                  with Finite Means  . . . . . . . . . . . 830--840
           Krzysztof R. Apt and   
                M. H. Van Emden   Contributions to the Theory of Logic
                                  Programming  . . . . . . . . . . . . . . 841--862
            Eitan M. Gurari and   
                Oscar H. Ibarra   Two-Way Counter Machines and Diophantine
                                  Equations  . . . . . . . . . . . . . . . 863--873
                Mark Jerrum and   
                      Marc Snir   Some Exact Complexity Results for
                                  Straight-Line Computations over
                                  Semirings  . . . . . . . . . . . . . . . 874--897
            Andrew Chi Chih Yao   On Parallel Computation for the Knapsack
                                  Problem  . . . . . . . . . . . . . . . . 898--903
                R. P. Brent and   
                     H. T. Kung   Corrigendum: ``The Area-Time Complexity
                                  of Binary Multiplication'' . . . . . . . 904--904
                Fouad A. Tobagi   Distributions of Packet Delay and
                                  Interdeparture Time in Slotted ALOHA and
                                  Carrier Sense Multiple Access  . . . . . 907--927

Journal of the ACM
Volume 29, Number 4, October, 1982

            James A. Storer and   
            Thomas G. Szymanski   Data Compression via Textual
                                  Substitution . . . . . . . . . . . . . . 928--951
                   Ronald Fagin   Horn Clauses and Database Dependencies   952--985
                 John Grant and   
                Barry E. Jacobs   On the Family of Generalized Dependency
                                  Constraints  . . . . . . . . . . . . . . 986--997
      Christos H. Papadimitriou   A Theorem in Database Concurrency
                                  Control  . . . . . . . . . . . . . . . . 998--1006
                 John C. Beatty   On the Relationship Between the LL(1)
                                  and LR(1) Grammars . . . . . . . . . . . 1007--1022
                Toshimi Minoura   Deadlock Avoidance Revisited . . . . . . 1023--1048
                Eugene W. Stark   Semaphore Primitives and Starvation-Free
                                  Mutual Exclusion . . . . . . . . . . . . 1049--1072
         Leslie M. Goldschlager   A Universal Interconnection Pattern for
                                  Parallel Computers . . . . . . . . . . . 1073--1086
            Thomas Lengauer and   
               Robert E. Tarjan   Asymptotically Tight Bounds on
                                  Time-Space Trade-offs in a Pebble Game   1087--1130
                David W. Matula   Basic Digit Sets for Radix
                                  Representation . . . . . . . . . . . . . 1131--1143
                  Carl H. Smith   The Power of Pluralism for Automatic
                                  Program Synthesis  . . . . . . . . . . . 1144--1165
                   Esko Ukkonen   The Equivalence Problem for Some
                                  Non-Real-Time Deterministic Pushdown
                                  Automata . . . . . . . . . . . . . . . . 1166--1181


Journal of the ACM
Volume 30, Number 1, January, 1983

                  A. Bagchi and   
                     A. Mahanti   Search Algorithms Under Different Kinds
                                  of Heuristics--A Comparative Study . . . 1--21
            Dennis de Champeaux   Bidirectional Heuristic Search Again . . 22--32
                  D. V. Sarwate   A Note on ``A Note on Multiple Error
                                  Detection in ASCII Numeric Data
                                  Communication''  . . . . . . . . . . . . 33--35
                   Anthony Klug   Locking Expressions for Increased
                                  Database Concurrency . . . . . . . . . . 36--54
                 Henry F. Korth   Locking Primitives in a Database System  55--79
           Greg N. Frederickson   Implicit Data Structures for the
                                  Dictionary Problem . . . . . . . . . . . 80--94
               H. A. Maurer and   
                 A. Salomaa and   
                        D. Wood   A Supernormal-Form Theorem for
                                  Context-Free Grammars  . . . . . . . . . 95--102
                 R. E. Lord and   
              J. S. Kowalik and   
                    S. P. Kumar   Solving Linear Algebraic Equations on an
                                  MIMD Computer  . . . . . . . . . . . . . 103--117
                 Bezalel Gavish   Formulations and Algorithms for the
                                  Capacitated Minimal Directed Tree
                                  Problem  . . . . . . . . . . . . . . . . 118--132
               Ravindran Kannan   Polynomial-Time Aggregation of Integer
                                  Programming Problems . . . . . . . . . . 133--145
            R. Schassberger and   
                      H. Daduna   The Time for a Round Trip in a Cycle of
                                  Exponential Queues . . . . . . . . . . . 146--150
             Steven Fortune and   
             Daniel Leivant and   
              Michael O'Donnell   The Expressiveness of Simple and
                                  Second-Order Type Structures . . . . . . 151--185
                   H. R. Strong   Vector Execution of Flow Graphs  . . . . 186--196
               Krzysztof R. Apt   Formal Justification of a Proof System
                                  for Communicating Sequential Processes   197--216
            Oscar H. Ibarra and   
                   Shlomo Moran   Probabilistic Algorithms for Deciding
                                  Equivalence of Straight-Line Programs    217--228

Journal of the ACM
Volume 30, Number 2, April, 1983

           Jeffrey Scott Vitter   Analysis of the Search Performance of
                                  Coalesced Hashing  . . . . . . . . . . . 231--258
                Seppo Sippu and   
    Eljas Soisalon-Soininen and   
                   Esko Ukkonen   The Complexity of LALR(k) Testing  . . . 259--270
                  G. W. Stewart   Computable Error Bounds for Aggregated
                                  Markov Chains  . . . . . . . . . . . . . 271--285
               K. M. Chandy and   
                   A. J. Martin   A Characterization of Product-Form
                                  Queueing Networks  . . . . . . . . . . . 286--299
               Jeffrey M. Jaffe   Decentralized Simulation of Resource
                                  Managers . . . . . . . . . . . . . . . . 300--322
               Daniel Brand and   
               Pitro Zafiropulo   On Communicating Finite-State Machines   323--342
             C. Farshid Nourani   Abstract Implementations and their
                                  Correctness Proofs . . . . . . . . . . . 343--359
                  Zvi Galil and   
              Wolfgang J. Pauli   An Efficient General-Purpose Parallel
                                  Computer . . . . . . . . . . . . . . . . 360--387

Journal of the ACM
Volume 30, Number 3, July, 1983

                  Michael Tarsi   Optimal Search on Some Game Trees  . . . 389--396
            Arnold L. Rosenberg   Three-Dimensional VLSI: A Case Study . . 397--416
            David W. Matula and   
                 Leland L. Beck   Smallest-Last Ordering and Clustering
                                  and Graph Coloring Algorithms  . . . . . 417--427
             Kenneth J. Supowit   The Relative Neighborhood Graph, with an
                                  Application to Minimum Spanning Trees    428--448
           Eshrat Arjomandi and   
         Michael J. Fischer and   
                 Nancy A. Lynch   Efficiency of Synchronous Versus
                                  Asynchronous Distributed Systems . . . . 449--456
         E. G. Coffman, Jr. and   
                     Ravi Sethi   Instruction Sets for Evaluating
                                  Arithmetic Expressions . . . . . . . . . 457--478
              Catriel Beeri and   
               Ronald Fagin and   
                David Maier and   
             Mihalis Yannakakis   On the Desirability of Acyclic Database
                                  Schemes  . . . . . . . . . . . . . . . . 479--513
                   Ronald Fagin   Degrees of Acyclicity for Hypergraphs
                                  and Relational Database Schemes  . . . . 514--550
                   Dan Gusfield   Parametric Combinatorial Computing and a
                                  Problem of Program Module Distribution   551--563
                     Rajan Suri   Robustness of Queuing Network Formulas   564--594
         Jean-Claude Raoult and   
                     Ravi Sethi   Properties of a Notation for Combining
                                  Functions  . . . . . . . . . . . . . . . 595--611
      Edmund M. Clarke, Jr. and   
           Steven M. German and   
              Joseph Y. Halpern   Effective Axiomatizations of Hoare
                                  Logics . . . . . . . . . . . . . . . . . 612--636
                     Georg Gati   The Complexity of Solving Polynomial
                                  Equations by Quadrature  . . . . . . . . 637--640
            Oscar H. Ibarra and   
             Brian S. Leininger   On the Simplification and Equivalence
                                  Problems for Straight-Line Programs  . . 641--656
                  Joseph Ja'Ja'   Time-Space Trade-Offs for Some Algebraic
                                  Problems . . . . . . . . . . . . . . . . 657--667
                     L. Lamport   The Weak Byzantine Generals Problem  . . 668--676
                 Xu Mei-Rui and   
              John E. Doner and   
                 Ronald V. Book   Refining Nondeterminism in
                                  Relativizations of Complexity Classes    677--685

Journal of the ACM
Volume 30, Number 4, October, 1983

                    Dana S. Nau   Decision Quality As a Function of Search
                                  Depth on Game Trees  . . . . . . . . . . 687--708
               Jia-Wei Hong and   
              Kurt Mehlhorn and   
            Arnold L. Rosenberg   Cost Trade-offs in Graph Embeddings,
                                  with Applications  . . . . . . . . . . . 709--728
                  Avi Wigderson   Improving the Performance Guarantee for
                                  Approximate Graph Coloring . . . . . . . 729--735
          Toshihide Ibaraki and   
     Hussein M. Abdel-Wahab and   
                    Tiko Kameda   Design of Minimum-Cost Deadlock-Free
                                  Systems  . . . . . . . . . . . . . . . . 736--751
           Giorgio Ausiello and   
          Alessandro D'Atri and   
               Domenico Sacc\`a   Graph Algorithms for Functional
                                  Dependency Manipulation  . . . . . . . . 752--766
             Nathan Goodman and   
                   Oded Shmueli   Syntactic Characterization of Tree
                                  Database Schemas . . . . . . . . . . . . 767--786
               Zvi M. Kedem and   
           Abraham Silberschatz   Locking Protocols: From Exclusive to
                                  Shared Locks . . . . . . . . . . . . . . 787--804
           Per-Åke Larson   Analysis of Uniform Hashing  . . . . . . 805--819
               Yael Krevner and   
                 Amiram Yehudai   An Iteration Theorem for Simple
                                  Precedence Languages . . . . . . . . . . 820--833
                    Bruce Hajek   The Proof of a Folk Theorem on Queuing
                                  Delay with Applications to Routing in
                                  Networks . . . . . . . . . . . . . . . . 834--851
                 Nimrod Megiddo   Applying Parallel Computation Algorithms
                                  in the Design of Serial Algorithms . . . 852--865


Journal of the ACM
Volume 31, Number 1, January, 1984

              Robert E. Shostak   Deciding Combinations of Theories  . . . 1--12
               H. J. Hoover and   
                M. M. Klawe and   
                N. J. Pippenger   Bounding Fan-out in Logical Networks . . 13--18
                Peter Eades and   
             Michael Hickey and   
                 Ronald C. Read   Some Hamilton Paths and a Minimal Change
                                  Algorithm  . . . . . . . . . . . . . . . 19--29
              Catriel Beeri and   
                Martin Dowd and   
               Ronald Fagin and   
                Richard Statman   On the Structure of Armstrong Relations
                                  for Functional Dependencies  . . . . . . 30--46
       Lawrence J. Henschen and   
                Shamim A. Naqvi   On Compiling Queries in Recursive
                                  First-Order Databases  . . . . . . . . . 47--85
                 Aurel A. Lazar   Optimal Flow Control of an M/M/m Queue   86--98
            Sidnie Dresher Feit   A Fast Algorithm for the Two-Variable
                                  Integer Programming Problem  . . . . . . 99--113
                 Nimrod Megiddo   Linear Programming in Linear Time When
                                  the Dimension Is Fixed . . . . . . . . . 114--127
                O. J. Boxma and   
                F. P. Kelly and   
                  A. G. Konheim   The Product Form for Sojourn Time
                                  Distributions in Cyclic Exponential
                                  Queues . . . . . . . . . . . . . . . . . 128--133
                       B. Simon   Priority Queues with Feedback  . . . . . 134--149
                  J. Ja'Ja' and   
           V. K. Prasanna Kumar   Information Transfer in Distributed
                                  Computing with Applications to VLSI  . . 150--162
               Douglas R. Smith   Random Trees and the Analysis of Branch
                                  and Bound Procedures . . . . . . . . . . 163--188

Journal of the ACM
Volume 31, Number 2, April, 1984

             Allan Gottlieb and   
               Clyde P. Kruskal   Complexity Results for Permuting Data
                                  and Other Computations on Parallel
                                  Processors . . . . . . . . . . . . . . . 193--209
                   Richard Hull   Finitely Specifiable Implicational
                                  Dependency Families  . . . . . . . . . . 210--226
             Mihalis Yannakakis   Serializability by Locking . . . . . . . 227--244
           Robert E. Tarjan and   
                Jan van Leeuwen   Worst-Case Analysis of Set Union
                                  Algorithms . . . . . . . . . . . . . . . 245--281
            Karel Culik, II and   
                     Tero Harju   The $\omega$-Sequence Equivalence
                                  Problem for D0L Systems Is Decidable . . 282--298
                 H. B. Hunt III   Terminating Turing Machine Computations
                                  and the Complexity and/or Decidability
                                  of Correspondence Problems, Grammars,
                                  and Program Schemes  . . . . . . . . . . 299--318
             C. W. Clenshaw and   
                 F. W. J. Olver   Beyond Floating Point  . . . . . . . . . 319--328
               George M. Trojan   Lower Bounds and Fast Algorithms for
                                  Sequence Acceleration  . . . . . . . . . 329--335
                 Hans Röck   The Three-Machine No-Wait Flow Shop Is
                                  NP-Complete  . . . . . . . . . . . . . . 336--345
                 J. McKenna and   
                  Debasis Mitra   Asymptotic Expansions and Integral
                                  Representations of Moments of Queue
                                  Lengths in Closed Markovian Networks . . 346--360
                Akeo Adachi and   
              Shigeki Iwata and   
                   Takumi Kasai   Some Combinatorial Game Problems Require
                                  ${\Omega}(n^k)$ Time . . . . . . . . . . 361--376
                  Joseph Ja'Ja'   The VLSI Complexity of Selected Graph
                                  Problems . . . . . . . . . . . . . . . . 377--391
      Christos H. Papadimitriou   On the Complexity of Unique Solutions    392--400
                   John H. Reif   Symmetric Complementation  . . . . . . . 401--421
                 John E. Savage   Space-Time Trade-Offs for Banded Matrix
                                  Problems . . . . . . . . . . . . . . . . 422--437

Journal of the ACM
Volume 31, Number 3, July, 1984

            Robert S. Boyer and   
              J. Strother Moore   A Mechanical Proof of the Unsolvability
                                  of the Halting Problem . . . . . . . . . 441--458
              Yuri Gurevich and   
           Larry Stockmeyer and   
                    Uzi Vishkin   Solving NP-Hard Problems on Graphs That
                                  Are Almost Trees and an Application to
                                  Facility Location Problems . . . . . . . 459--473
   François Baccelli and   
               Erol Gelenbe and   
               Brigitte Plateau   An End-to-End Approach to the
                                  Resequencing Problem . . . . . . . . . . 474--485
                 Ajoy Datta and   
                       S. Ghosh   Synthesis of a Class of Deadlock-Free
                                  Petri Nets . . . . . . . . . . . . . . . 486--506
                      Eli Upfal   Efficient Schemes for Parallel
                                  Communication  . . . . . . . . . . . . . 507--517
               Richard Hull and   
                    Chee K. Yap   The Format Model: A Theory of Database
                                  Organization . . . . . . . . . . . . . . 518--537
         Michael L. Fredman and   
 János Komlós and   
         Endre Szemerédi   Storing a Sparse Table with ${O(1)}$
                                  Worst Case Access Time . . . . . . . . . 538--544
                J. F. Traub and   
              H. Wo\'zniakowski   On the Optimal Solution of Large Linear
                                  Systems  . . . . . . . . . . . . . . . . 545--559
              S. D. Brookes and   
             C. A. R. Hoare and   
                   A. W. Roscoe   A Theory of Communicating Sequential
                                  Processes  . . . . . . . . . . . . . . . 560--599
                    John McLean   A Formal Method for the Abstract
                                  Specification of Software  . . . . . . . 600--627
                    Micha Hofri   Analysis of Interleaved Storage via a
                                  Constant-Service Queuing System with
                                  Markov-Chain-Driven Input  . . . . . . . 628--648
         Mikhail J. Atallah and   
                S. Rao Kosaraju   Graph Problems on a Mesh-Connected
                                  Processor Array  . . . . . . . . . . . . 649--667
  Friedhelm Meyer auf der Heide   A Polynomial Linear Search Algorithm for
                                  the $n$-Dimensional Knapsack Problem . . 668--676

Journal of the ACM
Volume 31, Number 4, October, 1984

               S. G. Williamson   Depth-First Search and Kuratowski
                                  Subgraphs  . . . . . . . . . . . . . . . 681--693
         Jonathan W. Greene and   
                 Abbas El Gamal   Configuration of VLSI Arrays in the
                                  Presence of Defects  . . . . . . . . . . 694--717
              Catriel Beeri and   
                 Moshe Y. Vardi   A Proof Procedure for Data Dependencies  718--741
      Stavros S. Cosmadakis and   
      Christos H. Papadimitriou   Updates of Relational Views  . . . . . . 742--760
        Tomasz Imieli\'nski and   
             Witold Lipski, Jr.   Incomplete Information in Relational
                                  Databases  . . . . . . . . . . . . . . . 761--791
                 A. Boja\'nczyk   Optimal Asynchronous Newton Method for
                                  the Solution of Nonlinear Equations  . . 792--803
             P.-J. Courtois and   
                       P. Semal   Bounds for the Positive Eigenvectors of
                                  Nonnegative Matrices and for Their
                                  Approximations by Decomposition  . . . . 804--825
           A. R. Calderbank and   
         E. G. Coffman, Jr. and   
                      L. Flatto   Optimum Head Separation in a Disk System
                                  with Two Read/Write Heads  . . . . . . . 826--838
           Benjamin Melamed and   
                    Micha Yadin   Numerical Computation of Sojourn-Time
                                  Distributions in Queuing Networks  . . . 839--854
              Debasis Mitra and   
               P. J. Weinberger   Probabilistic Models of Database
                                  Locking: Solutions, Computational
                                  Algorithms, and Asymptotics  . . . . . . 855--878
             P. A. Bloniarz and   
            H. B. Hunt, III and   
              D. J. Rosenkrantz   Algebraic Structures with Hard
                                  Equivalence and Minimization Problems    879--904
                   J. Pachl and   
                  E. Korach and   
                       D. Rotem   Lower Bounds for Distributed
                                  Maximum-Finding Algorithms . . . . . . . 905--918


Journal of the ACM
Volume 32, Number 1, January, 1985

                  A. Bagchi and   
                     A. Mahanti   Three Approaches to Heuristic Search in
                                  Networks . . . . . . . . . . . . . . . . 1--27
                 A. Mahanti and   
                      A. Bagchi   AND/OR Graph Heuristic Search Methods    28--51
             Leslie Lamport and   
            P. M. Melliar-Smith   Synchronizing Clocks in the Presence of
                                  Faults . . . . . . . . . . . . . . . . . 52--78
                Serge Abiteboul   Disaggregations in Databases . . . . . . 79--101
                  Ken Fuchs and   
                  Dennis Kafura   Memory-Constrained Task Scheduling on a
                                  Network of Dual Processors . . . . . . . 102--129
          Dorit S. Hochbaum and   
                 Wolfgang Maass   Approximation Schemes for Covering and
                                  Packing Problems in Image Processing and
                                  VLSI . . . . . . . . . . . . . . . . . . 130--136
           Matthew Hennessy and   
                   Robin Milner   Algebraic Laws for Nondeterminism and
                                  Concurrency  . . . . . . . . . . . . . . 137--161
            Hendrik Vantilborgh   Aggregation with an Error of
                                  ${O}(\epsilon^2)$  . . . . . . . . . . . 162--190
                Danny Dolev and   
          Rüdiger Reischuk   Bounds on Information Exchange for
                                  Byzantine Agreement  . . . . . . . . . . 191--204
                Shimon Even and   
             Alan L. Selman and   
                   Yacov Yacobi   Hard-Core Theorems for Complexity
                                  Classes  . . . . . . . . . . . . . . . . 205--217
                 Maria M. Klawe   A Tight Bound for Black and White
                                  Pebbles on the Pyramid . . . . . . . . . 218--228
             J. C. Lagarias and   
                  A. M. Odlyzko   Solving Low-Density Subset Sum Problems  229--246

Journal of the ACM
Volume 32, Number 2, April, 1985

                    M. A. Bauer   Soundness and Completeness of a
                                  Synthesis Algorithm Based on Example
                                  Computations . . . . . . . . . . . . . . 249--279
                 G. Gottlob and   
                     A. Leitsch   On the Efficiency of Subsumption
                                  Algorithms . . . . . . . . . . . . . . . 280--295
             Ching-Chy Wang and   
             Errol L. Lloyd and   
                 Mary Lou Soffa   Feedback Vertex Sets and Cyclically
                                  Reducible Graphs . . . . . . . . . . . . 296--313
              G. N. Buckley and   
                A. Silberschatz   Beyond Two-Phase Locking . . . . . . . . 314--326
            Brenda S. Baker and   
     Edward G. Coffman, Jr. and   
                 Dan E. Willard   Algorithms for Resolving Conflicts in
                                  Dynamic Storage Allocation . . . . . . . 327--343
       M. E. Gonzalez Smith and   
                   J. A. Storer   Parallel Algorithms for Data Compression 344--373
         Michael J. Fischer and   
             Nancy A. Lynch and   
            Michael S. Paterson   Impossibility of Distributed Consensus
                                  with One Faulty Process  . . . . . . . . 374--382
       G. Cornuéjols and   
                  D. Naddef and   
                 W. Pulleyblank   The Traveling Salesman Problem in Graphs
                                  with $3$-Edge Cutsets  . . . . . . . . . 383--410
               John Staples and   
                   V. L. Nguyen   A Fixpoint Semantics for
                                  Nondeterministic Data Flow . . . . . . . 411--444
           Asser N. Tantawi and   
                    Don Towsley   Optimal Static Load Balancing In
                                  Distributed Computer Systems . . . . . . 445--465
                Eitan M. Gurari   Decidable Problems for Powerful Programs 466--483
                   S. Skyum and   
                  L. G. Valiant   A Complexity Theory Based on Boolean
                                  Algebra  . . . . . . . . . . . . . . . . 484--502

Journal of the ACM
Volume 32, Number 3, July, 1985

               Rina Dechter and   
                    Judea Pearl   Generalized Best-First Search Strategies
                                  and the Optimality of A* . . . . . . . . 505--536
           Edward A. Bender and   
                  Jon T. Butler   Enumeration of Structured Flowcharts . . 537--548
          William H. Cunningham   Optimal Attack and Reinforcement of a
                                  Network  . . . . . . . . . . . . . . . . 549--561
                  C. C. Lee and   
                      D. T. Lee   A Simple On-Line Bin-Packing Algorithm   562--572
           Bernard Chazelle and   
                   Louis Monier   A Model of Computation for VLSI with
                                  Related Complexity Results . . . . . . . 573--588
        Albert G. Greenberg and   
                Shmuel Winograd   A Lower Bound on the Time Needed in the
                                  Worst Case to Resolve Conflicts
                                  Deterministically in Multiple Access
                                  Channels . . . . . . . . . . . . . . . . 589--596
             Dan E. Willard and   
               George S. Lueker   Adding Range Restriction Capability to
                                  Dynamic Data Structures  . . . . . . . . 597--617
                  Y. C. Tay and   
                 Rajan Suri and   
                 Nathan Goodman   A Mean Value Performance Model for
                                  Locking in Databases: The No-Waiting
                                  Case . . . . . . . . . . . . . . . . . . 618--651
     Daniel Dominic Sleator and   
            Robert Endre Tarjan   Self-Adjusting Binary Search Trees . . . 652--686
                  Andrew C. Yao   Uniform Hashing is Optimal . . . . . . . 687--693
                  David Zerling   Generating Binary Trees Using Rotations  694--701
                 Wei-Lu Cao and   
             William J. Stewart   Iterative Aggregation/Disaggregation
                                  Techniques for Nearly Uncoupled Markov
                                  Chains . . . . . . . . . . . . . . . . . 702--719
                 Udi Manber and   
                   Martin Tompa   Complexity of Problems on Probabilistic,
                                  Nondeterministic, and Alternating
                                  Decision Trees . . . . . . . . . . . . . 720--732
               A. P. Sistla and   
                   E. M. Clarke   The Complexity of Propositional Linear
                                  Temporal Logics  . . . . . . . . . . . . 733--749
      Christos H. Papadimitriou   Correction to ``A Theorem in Database
                                  Concurrency Control''  . . . . . . . . . 750--750

Journal of the ACM
Volume 32, Number 4, October, 1985

              Eugene C. Freuder   A Sufficient Condition for
                                  Backtrack-Bounded Search . . . . . . . . 755--761
            Richard M. Karp and   
                  Avi Wigderson   A Fast Parallel Algorithm for the
                                  Maximal Independent Set Problem  . . . . 762--773
               Domenico Sacc\`a   Closures of Database Hypergraphs . . . . 774--803
                Baruch Awerbuch   Complexity of Network Synchronization    804--823
             Gabriel Bracha and   
                      Sam Toueg   Asynchronous Consensus and Broadcast
                                  Protocols  . . . . . . . . . . . . . . . 824--840
       Hector Garcia-Molina and   
                 Daniel Barbara   How to Assign Votes in a Distributed
                                  System . . . . . . . . . . . . . . . . . 841--860
                  Ulrich Faigle   On Ordered Languages and the
                                  Optimization of Linear Functions by
                                  Greedy Algorithms  . . . . . . . . . . . 861--870
                 Ilan Adler and   
                 Nimrod Megiddo   A Simplex Algorithm Whose Average Number
                                  of Steps Is Bounded between Two
                                  Quadratic Functions of the Smaller
                                  Dimension  . . . . . . . . . . . . . . . 871--895
                    M. Hennessy   Acceptance Trees . . . . . . . . . . . . 896--928
  Friedhelm Meyer Auf Der Heide   Lower Bounds for Solving Linear
                                  Diophantine Equations on Random Access
                                  Machines . . . . . . . . . . . . . . . . 929--937
               Shlomo Moran and   
                  Marc Snir and   
                     Udi Manber   Applications of Ramsey's Theorem to
                                  Decision Tree Complexity . . . . . . . . 938--949
             Mihalis Yannakakis   A Polynomial Algorithm for the Min-Cut
                                  Linear Arrangement of Trees  . . . . . . 950--988


Journal of the ACM
Volume 33, Number 1, January, 1986

                Zohar Manna and   
              Richard Waldinger   Special Relations in Automated Deduction 1--59
                K. Mehlhorn and   
                F. P. Preparata   Routing through a Rectangle  . . . . . . 60--85
                 Benny Chor and   
       Charles E. Leiserson and   
           Ronald L. Rivest and   
               James B. Shearer   An Application of Number Theory to the
                                  Organization of Raster-Graphics Memory   86--104
             Marc H. Graham and   
       Alberto O. Mendelzon and   
                 Moshe Y. Vardi   Notions of Dependency Satisfaction . . . 105--129
          Boris Lubachevsky and   
                  Debasis Mitra   A Chaotic Asynchronous Algorithm for
                                  Computing the Fixed Point of a
                                  Nonnegative Matrix of Unit Spectral
                                  Radius . . . . . . . . . . . . . . . . . 130--150
           E. Allen Emerson and   
              Joseph Y. Halpern   ``Sometimes'' and ``Not Never''
                                  Revisited: On Branching versus Linear
                                  Time Temporal Logic  . . . . . . . . . . 151--178
             Derek L. Eager and   
              Kenneth C. Sevcik   Bound Hierarchies for Multiple-Class
                                  Queuing Networks . . . . . . . . . . . . 179--206
     Appie van de Liefvoort and   
                  Lester Lipsky   A Matrix-Algebraic Solution to Two
                                  ${K}_m$ Servers in a Loop  . . . . . . . 207--223
                    David Harel   Effective Transformations on Infinite
                                  Trees, with Applications to High
                                  Undecidability, Dominoes, and Fairness   224--248

Journal of the ACM
Volume 33, Number 2, April, 1986

       Vincent J. Digricoli and   
            Malcolm C. Harrison   Equality-Based Binary Resolution . . . . 253--289
                Takao Asano and   
               Tetsuo Asano and   
                   Hiroshi Imai   Partitioning a Polygonal Region into
                                  Trapezoids . . . . . . . . . . . . . . . 290--312
                 Leslie Lamport   The Mutual Exclusion Problem: Part I ---
                                  The Theory of Interprocess Communication 313--326
                 Leslie Lamport   The Mutual Exclusion Problem: Part II
                                  --- Statement and Solutions  . . . . . . 327--348
                 Raymond Reiter   A Sound and Sometimes Complete Query
                                  Evaluation Algorithm for Relational
                                  Databases with Null Values . . . . . . . 349--370
          Philippe Flajolet and   
                   Claude Puech   Partial Match Retrieval of
                                  Multidimensional Data  . . . . . . . . . 371--407

Journal of the ACM
Volume 33, Number 3, July, 1986

            Serge Abiteboul and   
               Seymour Ginsburg   Tuple Sequences and Lexicographic
                                  Indexes  . . . . . . . . . . . . . . . . 409--422
              Catriel Beeri and   
                  Michael Kifer   Elimination of Intersection Anomalies
                                  from Database Schemes  . . . . . . . . . 423--450
                   Francis Chin   Security Problems on Inference Control
                                  for SUM, MAX, and MIN queries  . . . . . 451--464
           Seymour Ginsburg and   
                   Richard Hull   Sort Sets in the Relational Model  . . . 465--488
                    Luc Devroye   A Note on the Height of Binary Search
                                  Trees  . . . . . . . . . . . . . . . . . 489--498
                Danny Dolev and   
             Nancy A. Lynch and   
          Shlomit S. Pinter and   
            Eugene W. Stark and   
               William E. Weihl   Reaching Approximate Agreement in the
                                  Presence of Faults . . . . . . . . . . . 499--516
          Thomas F. Coleman and   
          Anders Edenbrandt and   
                John R. Gilbert   Predicting Fill for Sparse Orthogonal
                                  Factorization  . . . . . . . . . . . . . 517--532
          Dorit S. Hochbaum and   
                David B. Shmoys   A Unified Approach to Approximation
                                  Algorithms for Bottleneck Problems . . . 533--550
                    Samar Singh   Improved Methods for Storing and
                                  Updating Information in the
                                  Out-of-Kilter Algorithm  . . . . . . . . 551--567
           Debasis S. Mitra and   
                     J. McKenna   Asymptotic Expansions for Closed
                                  Markovian Networks with State-Dependent
                                  Service Rates  . . . . . . . . . . . . . 568--592
         John N. Tsitsiklis and   
  Christos H. Papadimitriou and   
                 Pierre Humblet   The Performance of a Precedence-Based
                                  Queueing Discipline  . . . . . . . . . . 593--602
    Jose L. Balcázar and   
             Ronald V. Book and   
              Uwe Schöning   The Polynomial-Time Hierarchy and Sparse
                                  Oracles  . . . . . . . . . . . . . . . . 603--617
            Timothy J. Long and   
                 Alan L. Selman   Relativizing Complexity Classes with
                                  Sparse Oracles . . . . . . . . . . . . . 618--627

Journal of the ACM
Volume 33, Number 4, October, 1986

            Dennis de Champeaux   Subproblem Finder and Instance Checker,
                                  Two Cooperating Modules for Theorem
                                  Provers  . . . . . . . . . . . . . . . . 633--657
             W. Eric L. Grimson   The Combinatorics of Local Constraints
                                  in Model-Based Recognition and
                                  Localization from Sparse Data  . . . . . 658--686
            Vijaya Ramachandran   On Driving Many Long Wires in a VLSI
                                  Layout . . . . . . . . . . . . . . . . . 687--701
               R. Chaudhuri and   
                   A. N. V. Rao   Approximating Grammar Probabilities:
                                  Solution of a Conjecture . . . . . . . . 702--705
         Bruce Jay Collings and   
               G. Barry Hembree   Initializing Generalized Feedback Shift
                                  Register Pseudorandom Number Generators  706--711
                 M. Cosnard and   
                      Y. Robert   Complexity of Parallel QR Factorization  712--723
                  K. R. Apt and   
                  G. D. Plotkin   Countable Nondeterminism and Random
                                  Assignment . . . . . . . . . . . . . . . 724--767
               A. E. Conway and   
                N. D. Georganas   RECAL--A New Efficient Algorithm for the
                                  Exact Analysis of Multiple-Chain Queuing
                                  Networks . . . . . . . . . . . . . . . . 768--791
             Oded Goldreich and   
           Shafi Goldwasser and   
                  Silvio Micali   How to Construct Random Functions  . . . 792--807
                  R. Kannan and   
                   R. J. Lipton   Polynomial-Time Algorithm for the Orbit
                                  Problem  . . . . . . . . . . . . . . . . 808--821
            John H. Rowland and   
                 John R. Cowles   Small Sample Algorithms for the
                                  Identification of Polynomials  . . . . . 822--829


Journal of the ACM
Volume 34, Number 1, January, 1987

                B. Chazelle and   
                   D. P. Dobkin   Intersection of Convex Objects in Two
                                  and Three Dimensions . . . . . . . . . . 1--27
                   Victor Vianu   Dynamic Functional Dependencies and
                                  Database Aging . . . . . . . . . . . . . 28--59
               John H. Reif and   
              Leslie G. Valiant   A Logarithmic Time Sort for Linear Size
                                  Networks . . . . . . . . . . . . . . . . 60--76
                Danny Dolev and   
              Cynthia Dwork and   
               Larry Stockmeyer   On the Minimal Synchronism Needed for
                                  Distributed Consensus  . . . . . . . . . 77--97
       Greg N. Frederickson and   
                 Nancy A. Lynch   Electing a Leader in a Synchronous Ring  98--115
                  Eli Upfal and   
                  Avi Wigderson   How to Share Memory in a Distributed
                                  System . . . . . . . . . . . . . . . . . 116--127
               Yoshihito Toyama   On the Church-Rosser Property for the
                                  Direct Sum of Term Rewriting Systems . . 128--143
          Dorit S. Hochbaum and   
                David B. Shmoys   Using Dual Approximation Algorithms for
                                  Scheduling Problems: Theoretical and
                                  Practical Results  . . . . . . . . . . . 144--162
          Rüdiger Reischuk   Simultaneous WRITES of Parallel Random
                                  Access Machines Do Not Help to Compute
                                  Simple Arithmetic Functions  . . . . . . 163--178
         Lorenzo Donatiello and   
            Balakrishna R. Iyer   Analysis of a Composite Performance
                                  Reliability Measure for Fault-Tolerant
                                  Systems  . . . . . . . . . . . . . . . . 179--199
                   Richard Cole   Slowing Down Sorting Networks to Obtain
                                  Faster Sorting Algorithms  . . . . . . . 200--208
              Alasdair Urquhart   Hard Examples for Resolution . . . . . . 209--219

Journal of the ACM
Volume 34, Number 2, April, 1987

             Neil V. Murray and   
                 Erik Rosenthal   Inference with Path Resolution and
                                  Semantic Graphs  . . . . . . . . . . . . 225--254
                   Wen-Lian Hsu   Recognizing Planar Perfect Graphs  . . . 255--288
        Albert G. Greenberg and   
          Philippe Flajolet and   
              Richard E. Ladner   Estimating the Multiplicities of
                                  Conflicts to Speed Their Resolution in
                                  Multiple Access Channels . . . . . . . . 289--325
              Yann-Hang Lee and   
                   Kang G. Shin   Optimal Reconfiguration Strategy for a
                                  Degradable Multimodule Computing System  326--348
          Edward P. F. Chan and   
           Alberto O. Mendelzon   Answering Queries on Embedded-Complete
                                  Database Schemes . . . . . . . . . . . . 349--375
       Christos A. Papachristou   Associative Table Lookup Processing for
                                  Multioperand Residue Arithmetic  . . . . 376--396
            Georg Ch. Pflug and   
                Hans W. Kessler   Linear Probing with a Nonuniform Address
                                  Distribution . . . . . . . . . . . . . . 397--410
           Pierpaolo Degano and   
                  Ugo Montanari   A Model for Distributed Systems Based on
                                  Graph Rewriting  . . . . . . . . . . . . 411--449
                    David Peleg   Concurrent Dynamic Logic . . . . . . . . 450--479
                   Steven Homer   Minimal Degrees for Polynomial
                                  Reducibilities . . . . . . . . . . . . . 480--491
             K. N. Venkataraman   Decidability of the Purely Existential
                                  Fragment of the Theory of Term Algebras  492--510

Journal of the ACM
Volume 34, Number 3, July, 1987

                  Zvi Galil and   
      Christoph M. Hoffmann and   
             Eugene M. Luks and   
           Claus P. Schnorr and   
                  Andreas Weber   An ${O}(n^3 \log n)$ Deterministic and
                                  an ${O}(n^3)$ Las Vegas Isomorphism Test
                                  for Trivalent Graphs . . . . . . . . . . 513--531
           Robert W. Irving and   
               Paul Leather and   
                   Dan Gusfield   An Efficient Algorithm for the
                                  ``Optimal'' Stable Marriage  . . . . . . 532--543
              Catriel Beeri and   
                  Michael Kifer   A Theory of Intersection Anomalies in
                                  Relational Database Schemes  . . . . . . 544--577
                  A. Blumer and   
                  J. Blumer and   
                D. Haussler and   
               R. McConnell and   
                 A. Ehrenfeucht   Complete Inverted Files for Efficient
                                  Text Retrieval and Analysis  . . . . . . 578--595
         Michael L. Fredman and   
            Robert Endre Tarjan   Fibonacci Heaps and Their Uses in
                                  Improved Network Optimization Algorithms 596--615
           D. S. Hirschberg and   
                  L. L. Larmore   New Applications of Failure Functions    616--625
             T. K. Srikanth and   
                      Sam Toueg   Optimal Clock Synchronization  . . . . . 626--645
              Stanley Cabay and   
                     Bart Domzy   Systems of Linear Equations with Dense
                                  Univariate Polynomial Coefficients . . . 646--660
                Randolph Nelson   Stochastic Catastrophe Theory in
                                  Computer Performance Modeling  . . . . . 661--685
                     Rajan Suri   Infinitesimal Perturbation Analysis for
                                  General Discrete Event Systems . . . . . 686--717
             Ronald V. Book and   
                    Ding-Zhu Du   The Existence and Density of Generalized
                                  Complexity Cores . . . . . . . . . . . . 718--730
              Michio Oyamaguchi   The Equivalence Problem for Real-Time
                                  DPDAs  . . . . . . . . . . . . . . . . . 731--760

Journal of the ACM
Volume 34, Number 4, October, 1987

           Alfred Inselberg and   
               Tuval Chomut and   
                 Mordechai Reif   Convexity Algorithms in Parallel
                                  Coordinates  . . . . . . . . . . . . . . 765--801
              Debasis Mitra and   
             Randall A. Cieslak   Randomized Parallel Communications on an
                                  Extension of the Omega Network . . . . . 802--824
           Jeffrey Scott Vitter   Design and Analysis of Dynamic Huffman
                                  Codes  . . . . . . . . . . . . . . . . . 825--845
                 Dan E. Willard   Multidimensional Search Trees That
                                  Provide New Types of Memory Reductions   846--858
            Joshua J. Bloch and   
            Dean S. Daniels and   
              Alfred Z. Spector   A Weighted Voting Algorithm for
                                  Replicated Directories . . . . . . . . . 859--909
                 Gabriel Bracha   An ${O}(\log n)$ Expected Rounds
                                  Randomized Byzantine Generals Protocol   910--920
                 Prasoon Tiwari   Lower Bounds on Communication Complexity
                                  in Distributed Computer Networks . . . . 921--938
                     Shu Tezuka   On the Discrepancy of GFSR Pseudorandom
                                  Numbers  . . . . . . . . . . . . . . . . 939--949
              Donald B. Johnson   Parallel Algorithms for Minimum Cuts and
                                  Maximum Flows in Planar Networks . . . . 950--967
               Michael Kaminski   A Linear Time Algorithm for Residue
                                  Computation and a Fast Algorithm for
                                  Division with a Sparse Divisor . . . . . 968--984
                  James McKenna   Asymptotic Expansions of the Sojourn
                                  Time Distribution Functions of Jobs in
                                  Closed, Product-Form Queuing Networks    985--1003
               Miklos Ajtai and   
                  Yuri Gurevich   Monotone versus Positive . . . . . . . . 1004--1015
                   Y. Sagiv and   
                 C. Delobel and   
          D. S. Parker, Jr. and   
                   Ronald Fagin   Correction to ``An Equivalence between
                                  Relational Database Dependencies and a
                                  Fragment of Propositional Logic''  . . . 1016--1018


Journal of the ACM
Volume 35, Number 1, January, 1988

              Christoph Walther   Many-Sorted Unification  . . . . . . . . 1--17
                 N. Megiddo and   
               S. L. Hakimi and   
                M. R. Garey and   
              D. S. Johnson and   
            C. H. Papadimitriou   The Complexity of Searching a Graph  . . 18--44
              Yann-Hang Lee and   
                   Kang G. Shin   Optimal Design and Use of Retry in
                                  Fault-Tolerant Computer Systems  . . . . 45--69
            Serge Abiteboul and   
                   Victor Vianu   Equivalence and Optimization of
                                  Relational Transactions  . . . . . . . . 70--120
              Vassos Hadzilacos   A Theory of Reliability in Database
                                  Systems  . . . . . . . . . . . . . . . . 121--145
                   Anthony Klug   On Conjunctive Queries Containing
                                  Inequalities . . . . . . . . . . . . . . 146--160
           Gaston H. Gonnet and   
           Per-Åke Larson   External Hashing with Limited Internal
                                  Storage  . . . . . . . . . . . . . . . . 161--184
             Timothy Hickey and   
                  Jacques Cohen   Automating Program Analysis  . . . . . . 185--220
         Satish K. Tripathi and   
             C. Murray Woodside   A Vertex-Allocation Theorem for
                                  Resources in Queuing Networks  . . . . . 221--230
                 Erich Kaltofen   Greatest Common Divisors of Polynomials
                                  Given by Straight-Line Programs  . . . . 231--264

Journal of the ACM
Volume 35, Number 2, April, 1988

             Avikam Baltsan and   
                   Micha Sharir   On the shortest paths between two convex
                                  polyhedra  . . . . . . . . . . . . . . . 267--287
              Cynthia Dwork and   
                Nancy Lynch and   
               Larry Stockmeyer   Consensus in the Presence of Partial
                                  Synchrony  . . . . . . . . . . . . . . . 288--323
          Robert McNaughton and   
          Paliath Narendran and   
                 Friedrich Otto   Church-Rosser Thue Systems and Formal
                                  Languages  . . . . . . . . . . . . . . . 324--344
          Jeffrey D. Ullman and   
               Allen Van Gelder   Efficient Tests for Top-Down Termination
                                  of Logical Rules . . . . . . . . . . . . 345--373
                  Zvi Galil and   
              Éva Tardos   An ${O}(n^2 (m + n \log n ) \log n)$
                                  Min-Cost Flow Algorithm  . . . . . . . . 374--386
            Galen H. Sasaki and   
                    Bruce Hajek   The Time Complexity of Maximum Matching
                                  by Simulated Annealing . . . . . . . . . 387--403
       Ravinderpal Singh Sandhu   The Schematic Protection Model: Its
                                  Definition and Analysis for Acyclic
                                  Attenuation Schemes  . . . . . . . . . . 404--432
           A. R. Calderbank and   
         E. G. Coffman, Jr. and   
                 Leopold Flatto   Optimal Directory Placement on Disk
                                  Storage Devices  . . . . . . . . . . . . 433--446
                     Helmut Alt   Comparing the Combinational Complexities
                                  of Arithmetic Functions  . . . . . . . . 447--460
                   Ingo Wegener   On the Complexity of Branching Programs
                                  and Decision Trees for Clique Functions  461--471

Journal of the ACM
Volume 35, Number 3, July, 1988

                     N. Shankar   A Mechanical Proof of the Church-Rosser
                                  Theorem  . . . . . . . . . . . . . . . . 475--522
           Merrick L. Furst and   
          Jonathan L. Gross and   
                Lyle A. McGeoch   Finding a Maximum-Genus Graph Imbedding  523--534
                   Wen-Lian Hsu   The Coloring and Maximum Independent Set
                                  Problems on Planar Perfect Graphs  . . . 535--563
             Wansoo T. Rhee and   
               Michel Talagrand   Some Distributions That Allow Perfect
                                  Packing  . . . . . . . . . . . . . . . . 564--578
           Jonathan Goodman and   
        Albert G. Greenberg and   
                Neal Madras and   
                    Peter March   Stability of Binary Exponential Backoff  579--602
           Lenwood S. Heath and   
        Arnold L. Rosenberg and   
                 Bruce T. Smith   The Physical Mapping Problem for
                                  Parallel Architectures . . . . . . . . . 603--634
            S. Rao Kosaraju and   
             Mikhail J. Atallah   Optimal Simulations between
                                  Mesh-Connected Arrays of Processors  . . 635--650
              Faith E. Fich and   
                   Martin Tompa   The Parallel Complexity of
                                  Exponentiating Polynomials over Finite
                                  Fields . . . . . . . . . . . . . . . . . 651--667
                    Hans Daduna   Busy Periods for Subnetworks in
                                  Stochastic Networks: Mean Value Analysis 668--674
         Jan Robin Rohlicek and   
                Alan S. Willsky   The Reduction of Perturbed Markov
                                  Generators: An Algorithm Exposing the
                                  Role of Transient States . . . . . . . . 675--696
               Jik H. Chang and   
            Oscar H. Ibarra and   
              Anastasios Vergis   On the Power of One-Way Communication    697--726
         Michael R. Fellows and   
            Michael A. Langston