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\bibitem[\protect\citeauthoryear{Girou}{Girou}{1994}]{Girou:PSTricks:1994}
Girou, Denis.
\newblock ``Pr\'esentation de PSTricks''.
\newblock {\em Cahiers GUTenberg} {\bf 16}, 21--70, 1994.

\bibitem[\protect\citeauthoryear{Girou}{Girou}{1995}]{Girou:PSTricks:1995}
Girou, Denis.
\newblock ``Building high level objects in PSTricks, TUG'95, St Petersburg,
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\newblock Available at
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\bibitem[\protect\citeauthoryear{Goossens, Rahtz, and Mittelbach}{Goossens
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Goossens, Michel, S.~Rahtz, and F.~Mittelbach.
\newblock {\em The {\LaTeX} Graphics Companion}.
\newblock Addison-Wesley, 1997.

\bibitem[\protect\citeauthoryear{Hoenig}{Hoenig}{1998}]{Hoenig:TU:1998}
Hoenig, Alan.
\newblock {\em {\TeX} Unbound: {\LaTeX} \& {\TeX} Strategies, Fonts, Graphics,
  and More}.
\newblock Oxford University Press, 1998.

\bibitem[\protect\citeauthoryear{Rose and Moore}{Rose and
  Moore}{1991-1998}]{RoseMoore:XYpic:1998}
Rose, Kristoffer~H. and R.~Moore.
\newblock ``{\XYpic}. Polygon feature''.
\newblock Available from {\CTAN}, {\CTANref{xypic}}, 1991-1998.

\bibitem[\protect\citeauthoryear{van Zandt}{van
  Zandt}{1993}]{vanZandt:PSTricks:1993}
van Zandt, Timothy.
\newblock ``PSTricks. PostScript macros for Generic \TeX''.
\newblock Available from {\CTAN}, {\CTANref{pstricks}}, 1993-1997.

\bibitem[\protect\citeauthoryear{van Zandt and Girou}{van Zandt and
  Girou}{1994}]{vanZandtGirou:TB15-3-239}
van Zandt, Timothy and D.~Girou.
\newblock ``Inside PSTricks''.
\newblock {\em {\TUB}} {\bf 15}(3), 239--246, 1994.

\end{thebibliography}