# NQL : a GAP 4 package - References

[Bartholdi03]
  Laurent Bartholdi.
  Endomorphic presentations of branch groups.
  J. Algebra, 268:419--443, 2003.
[BartholdiGrigorchuk02]
  Laurent Bartholdi and Rostislav I. Grigorchuk.
  On parabolic subgroups and Hecke algebras of some fractal groups.
  Serdica Math. J., 28(1):47--90, 2002.
[BrunnerVieiraSidki99]
  A. M. Brunner, Said Sidki, and Ana Cristina Vieira.
  A just-nonsolvable torsion-free group defined on the binary tree.
  211(1):99--114, 1999.
[BartholdiVirag05]
  Laurent Bartholdi and Bálint Virág.
  Amenability via random walks.
  Duke Math. J., 130(1):39--56, 2005.
[FabrykowskiGupta85]
  Jacek Fabrykowski and Narain Gupta.
  On groups with sub-exponential growth functions.
  J. Indian Math. Soc. (N.S.), 49(3-4):249--256 (1987), 1985.
[Grigor80]
  R.I. Grigorchuk.
  Burnside's problem on periodic groups.
  Functional Analysis and its Applications, 14:41--43, 1980.
[GrigorchukZuk02]
  Rostislav Grigorchuk and Andrzej Zuk.
  On a torsion-free weakly branch group defined by a three state automaton.
  Internat. J. Algebra Comput., 12(1--2):223--246, 2002.
[Lysenok85]
  I.G. Lysenok.
  A system of defining relations for a Grigorchuk group.
  Mathematical Notes, 38:784--792, 1985.
[Nickel96]
  Werner Nickel.
  Computing nilpotent quotients of finitely presented groups.
  DIMACS Series in Discrete Mathematics and Theoretical Computer Science, 25:175--191, 1996.
[nq]
  W. Nickel.
  NQ, 2003.
  A GAP4 package, see GAP4.
[Sidki87]
  Said Sidki.
  On a 2-generated infinite 3-group: The presentation problem.
  Journal of Algebra, 110:13--23, 1987.

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