  
  
  [1XReferences[101X
  
  [[20XBar09[120X]          [16XBarakat,         M.[116X,         [17XThe         homalg         package         --         GAP4[117X         (2007-2009),
  ((http://homalg.math.rwth-aachen.de/index.php/core-packages/homalg-package)).
  
  [[20XBR06[120X] [16XBarakat, M. and Robertz, D.[116X, [17Xhomalg: First steps to an abstract package for homological algebra[117X, in Proceedings of the
  X   meeting   on   computational   algebra   and   its   applications   (EACA   2006),   Sevilla   (Spain)   (2006),  29--32,
  ((http://homalg.math.rwth-aachen.de/maple/homalg_eaca06.pdf)).
  
  [[20XBR08[120X]  [16XBarakat,  M.  and  Robertz,  D.[116X,  [17Xhomalg  --  A  Meta-Package for Homological Algebra[117X, [18XJ. Algebra Appl.[118X, [19X7[119X, 3 (2008),
  299--317, ((arXiv:math.AC/0701146)).
  
  [[20XGör08[120X] [16XGörtzen, S.[116X, [17XGAP Package Gauss[117X (2007-2008), ((http://wwwb.math.rwth-aachen.de/goertzen/Gauss)).
  
  [[20XLN08[120X]        [16XLübeck,        F.       and       Neunhöffer,       M.[116X,       [17XGAP       Package       GAPDoc[117X       (2007-2008),
  ((http://www.math.rwth-aachen.de/~Frank.Luebeck/GAPDoc)).
  
  
  
  [32X
