References
  
  [Koh07]  Kohl, S., RCWA - Residue-Class-Wise Affine Groups (Version 2.5)
  (2007), ( GAP package, http://www.gap-system.org/Packages/rcwa.html )
  
  [LN07]  Lübeck, F. and Neunhöffer, M., GAPDoc (Version 1.0), RWTH Aachen
  (2007), ( GAP package, http://www.gap-system.org/Packages/gapdoc.html )
  
  
  
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