@manual{ GAP4,
  title =            {{GAP}         \texttt{\symbol{45}}\texttt{\symbol{45}}
                      {G}roups,  {A}lgorithms,  and  {P}rogramming,  Version
                      4.10.2},
  organization =     {The GAP Group},
  year =             {2019},
  note =             {\href                     {https://www.gap-system.org}
                      {\texttt{https://www.gap\texttt{\symbol{45}}system.org}}},
  key =              {GAP},
  keywords =         {groups; *; gap; manual}
}
@misc{ normaliz,
  author =           {Bruns,   W.  and  Ichim,  B.  and  R{\"o}mer,  T.  and
                      S{\"o}ger, C.},
  title =            {{Normaliz}, a tool for computations in affine monoids,
                      vector configurations, lattice polytopes, and rational
                      cones, {V}ersion 3.5.4},
  year =             {2018},
  howpublished =     {\href         {https://www.normaliz.uni-osnabrueck.de}
                      {\texttt{https://www.normaliz.uni\texttt{\symbol{45}}osnabrueck.de}}},
  printedkey =       {BIRS18}
}