



@manual{ GAP4,
  title =            {{GAP  --  Groups, Algorithms, and Programming, Version
                      4.8}},
  organization =     {The GAP\texttt{\symbol{126}}Group},
  year =             {2006},
  note =             {\href                      {http://www.gap-system.org}
                      {\texttt{http://www.gap-system.org}}},
  key =              {GAP},
  keywords =         {groups; *; gap; manual}
}
@inproceedings{ BREACA,
  author =           {Barakat, M. and Robertz, D.},
  booktitle =        {{Proceedings of the X meeting on computational algebra
                      and its applications ({EACA 2006}), Sevilla (Spain)}},
  title =            {$homalg$:  First  steps  to  an  abstract  package for
                      homological algebra},
  year =             {2006},
  pages =            {29--32},
  note =             {\href
                      {http://homalg.math.rwth-aachen.de/maple/homalg_eaca06.pdf}
                      {\texttt{http://homalg.math.rwth-aachen.de/}\discretionary
                      {}{}{}\texttt{maple/}\discretionary
                      {}{}{}\texttt{homalg{\textunderscore}eaca06.pdf}}},
  printedkey =       {BR06}
}
@manual{ homalg-package,
  author =           {Barakat, M.},
  title =            {The homalg package -- GAP4},
  year =             {2007-2009},
  note =             {\href
                      {http://homalg.math.rwth-aachen.de/index.php/core-packages/homalg-package}
                      {\texttt{http://homalg.math.rwth-aachen.de/}\discretionary
                      {}{}{}\texttt{index.php/}\discretionary
                      {}{}{}\texttt{core-packages/}\discretionary
                      {}{}{}\texttt{homalg-package}}},
  printedkey =       {Bar09}
}
@article{ BR,
  author =           {Barakat, M. and Robertz, D.},
  title =            {homalg   --  {A}  {M}eta-{P}ackage  for  {H}omological
                      {A}lgebra},
  journal =          {J. Algebra Appl.},
  volume =           {7},
  number =           {3},
  year =             {2008},
  pages =            {299--317},
  note =             {arXiv:math.AC/0701146},
  fjournal =         {Journal of Algebra and its Applications},
  issn =             {0219-4988},
  mrclass =          {16E30 (16-04)},
  mrnumber =         {MR2431811},
  printedkey =       {BR08}
}
@article{ MP_SCO,
  author =           {Moerdijk, I. and Pronk, D. A.},
  title =            {Simplicial cohomology of orbifolds},
  journal =          {Indag. Math. (N.S.)},
  volume =           {10},
  number =           {2},
  year =             {1999},
  pages =            {269--293},
  fjournal =         {Koninklijke  Nederlandse  Akademie  van Wetenschappen.
                      Indagationes Mathematicae. New Series},
  issn =             {0019-3577},
  mrclass =          {55N91 (55N30 57M60)},
  mrnumber =         {MR1816220 (2002b:55012)},
  mrreviewer =       {Darryl McCullough},
  printedkey =       {MP99}
}
@manual{ RingsForHomalg,
  author =           {Barakat,  M. and G{\"o}rtzen, S. and Kirschmer, M. and
                      Lange-Hegermann, M.},
  title =            {GAP Package RingsForHomalg},
  year =             {2007-2008},
  note =             {\href
                      {http://homalg.math.rwth-aachen.de/index.php/core-packages/ringsforhomalg}
                      {\texttt{http://homalg.math.rwth-aachen.de/}\discretionary
                      {}{}{}\texttt{index.php/}\discretionary
                      {}{}{}\texttt{core-packages/}\discretionary
                      {}{}{}\texttt{ringsforhomalg}}},
  printedkey =       {BGKL08}
}
@manual{ SCO,
  author =           {G{\"o}rtzen, S.},
  title =            {GAP Package SCO},
  year =             {2007-2008},
  note =             {\href   {http://wwwb.math.rwth-aachen.de/goertzen/SCO}
                      {\texttt{http://wwwb.math.rwth-aachen.de/}\discretionary
                      {}{}{}\texttt{goertzen/}\discretionary
                      {}{}{}\texttt{SCO}}},
  printedkey =       {G{\"o}r08}
}
@manual{ Gauss,
  author =           {G{\"o}rtzen, S.},
  title =            {GAP Package Gauss},
  year =             {2007-2008},
  note =             {\href {http://wwwb.math.rwth-aachen.de/goertzen/Gauss}
                      {\texttt{http://wwwb.math.rwth-aachen.de/}\discretionary
                      {}{}{}\texttt{goertzen/}\discretionary
                      {}{}{}\texttt{Gauss}}},
  printedkey =       {G{\"o}r08}
}
@manual{ GaussForHomalg,
  author =           {G{\"o}rtzen, S.},
  title =            {GAP Package GaussForHomalg},
  year =             {2007-2008},
  note =             {\href
                      {http://wwwb.math.rwth-aachen.de/goertzen/GaussForHomalg}
                      {\texttt{http://wwwb.math.rwth-aachen.de/}\discretionary
                      {}{}{}\texttt{goertzen/}\discretionary
                      {}{}{}\texttt{GaussForHomalg}}},
  printedkey =       {G{\"o}r08}
}
@manual{ GAPDoc,
  author =           {L{\"u}beck, F. and Neunh{\"o}ffer, M.},
  title =            {GAP Package GAPDoc},
  year =             {2007-2008},
  note =             {\href
                      {http://www.math.rwth-aachen.de/~Frank.Luebeck/GAPDoc}
                      {\texttt{http://www.math.rwth-aachen.de/}\discretionary
                      {}{}{}\texttt{\texttt{\symbol{126}}Frank.Luebeck/}\discretionary
                      {}{}{}\texttt{GAPDoc}}},
  printedkey =       {LN08}
}
@mastersthesis{ Goe,
  author =           {G{\"o}rtzen, S.},
  title =            {Simplicial Cohomology of Orbifolds},
  school =           {RWTH Aachen University},
  year =             {2008},
  note =             {in preparation},
  printedkey =       {G{\"o}r08}
}
@book{ MR1269324,
  author =           {Weibel, C. A.},
  title =            {An introduction to homological algebra},
  publisher =        {Cambridge University Press},
  series =           {Cambridge Studies in Advanced Mathematics},
  volume =           {38},
  address =          {Cambridge},
  year =             {1994},
  pages =            {xiv+450},
  isbn =             {0-521-43500-5; 0-521-55987-1},
  mrclass =          {18-01 (16-01 17-01 20-01 55Uxx)},
  mrnumber =         {MR1269324 (95f:18001)},
  mrreviewer =       {Kenneth A. Brown},
  printedkey =       {Wei94}
}
@book{ MR1438306,
  author =           {Gelfand, S. I. and Manin, Y. I.},
  title =            {Methods of homological algebra},
  publisher =        {Springer-Verlag},
  address =          {Berlin},
  year =             {1996},
  pages =            {xviii+372},
  note =             {Translated from the 1988 Russian original},
  isbn =             {3-540-54746-0},
  mrclass =          {18-02 (18Exx 18Gxx 55U35)},
  mrnumber =         {MR1438306 (97j:18001)},
  printedkey =       {GM96}
}
@unpublished{ WGC,
  author =           {G{\"o}rtzen, S.},
  title =            {Wallpaper Group Cohomology},
  year =             {2008},
  note =             {\href      {http://wwwb.math.rwth-aachen.de/goertzen/}
                      {\texttt{http://wwwb.math.rwth-aachen.de/}\discretionary
                      {}{}{}\texttt{goertzen/}}},
  printedkey =       {G{\"o}r08}
}
