References
  
  [GAP06]  GAP  -- Groups, Algorithms, and Programming, Version 4.4.9, The GAP
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  [Lam85]  Lamport,  L.,  LaTeX: A Document Preparation System, Addison-Wesley
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  [Neu07] Neunhöffer, M., IO, Bindings for low level C library IO, Version 2.2
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