\begin{thebibliography}{1}

\bibitem{citepaper}
J.~F. Fuller, E.~F. Fuchs, and K.~J. Roesler,
\newblock ``Influence of harmonics in power distribution system protection'',
\newblock {\em {IEEE} Trans.{\ }Power Delivery}, vol. 3, no. 2, pp. 549--557,
  April 1988.

\bibitem{citebook}
E.~Clark,
\newblock {\em Circuit Analysis of {AC} Power Systems}, vol.~I,
\newblock Wiley, New York, 1950.

\bibitem{citeconference}
J.~L. Alqueres and J.~C. Praca,
\newblock ``The brazilian power system and the challenge of the {A}mazon
  transmission'',
\newblock in {\em Proceedings of the 1991 Power Engineering Society
  Transmission and Distribution Conference}, 1991, pp. 315--320,
\newblock {91CH3070-0}.

\end{thebibliography}
