\begin{thebibliography}{GAP04}

\bibitem[Car89]{Carter72}
Roger~W. Carter.
\newblock {\em Simple groups of {L}ie type}.
\newblock Wiley Classics Library. John Wiley \& Sons Inc., New York, 1989.
\newblock Reprint of the 1972 original, A Wiley-Interscience Publication.

\bibitem[GAP04]{GAP4}
The GAP~Group, Aachen, St~Andrews.
\newblock {\em {GAP -- Groups, Algorithms, and Programming, Version 4.4}},
  2004.
\newblock \URL{http://www.gap-system.org}.

\bibitem[Hal00]{SH2000}
Sergei Haller.
\newblock {Entwicklung und Implementierung eines Algorithmus zur Berechnung von
  Kommutatoren unipotenter Elemente in Chevalley-Gruppen}.
\newblock Di\-plom\-ar\-beit, Mathe\-mati\-sches Insti\-tut,
  Jus\-tus-Lie\-big-Uni\-ver\-si\-t{\"a}t Gie{\ss}en, April 2000.

\end{thebibliography}