@manual{GAP4,
  key          = "GAP",
  organization = "The GAP~Group",
  title        = "{GAP -- Groups, Algorithms, and Programming, Version 4.3}",
  year         = 2002,
  note         = "\URL{http://www.gap-system.org}",
  keywords     = "groups; *; gap; manual",
}


@article{Kant,
        author =       {M. Daberkow and C.Fieker and J. Kl\"uners and
                        M. Pohst and K.Roegner and K. Wildanger},
        title =        {Kant {V4}},
        journal =      {J. Symb. Comput.},
        volume =       24,
        year =         {1997},
        pages =        {267 -- 283}}

@book{Poh93,
        author =       {Michael E. Pohst},
        title =        {Computational Algebraic Number Theory},
        publisher =    {Birk\"auser},
        volume =       {21},
        series =       {DMV Seminar},
        year =         1993 }

@manual{Polycyclic,
        author =       {Bettina Eick and Werner Nickel},
        title =        {Polycyclic},
        note =         {A {GAP 4} package, see \cite{GAP4}},
        year =         {2000} }

@book{PZa89,
        author =        {M. Pohst and H. Zassenhaus},
        title =         {Algorithmic algebraic number theory},
        publisher =     {Cambridge University Press},
        year =          1989 }

@book{Coh93,
        author =        {Henri Cohen},
        title =         {A course in computational algebraic number theory},
        publisher =     {Springer-Verlag},
        address =       {New York, Heidelberg, Berlin},
        year =          1993 }

@book{STa79,
        author = {I. N. Stuart and D. O. Tall},
        title = {Algebraic number theory},
        publisher = {Chapman and Hall},
        year = {1979}}