@manual{ GAPDoc,
  author =           {L{\"u}beck, F. and Neunh{\"o}ffer, M.},
  title =            {{GAPDoc (Version 1.0)}},
  organization =     {RWTH Aachen},
  year =             {2007},
  note =             {GAP                   package,                   \href
                      {http://www.gap-system.org/Packages/gapdoc.html}
                      {\texttt{http://www.gap-system.org/}\discretionary
                      {}{}{}\texttt{Packages/}\discretionary
                      {}{}{}\texttt{gapdoc.html}}},
  printedkey =       {LN07}
}
@manual{ RCWA,
  author =           {Kohl, S.},
  title =            {{RCWA  -  Residue-Class-Wise  Affine  Groups  (Version
                      2.5)}},
  year =             {2007},
  note =             {GAP                   package,                   \href
                      {http://www.gap-system.org/Packages/rcwa.html}
                      {\texttt{http://www.gap-system.org/}\discretionary
                      {}{}{}\texttt{Packages/}\discretionary
                      {}{}{}\texttt{rcwa.html}}},
  printedkey =       {Koh07}
}