# aclib : a GAP 4 package - References

[AUS]
  Louis Auslander.
  Bieberbach's theorem on space groups and discrete uniform subgroups of lie groups.
  Ann. of Math, 71(3):579--590, 1960.
[BRO]
  Kenneth S. Brown.
  Cohomology of Groups, volume 87 of Grad. Texts in Math.
  Springer-Verlag, New York, 1982.
[DE2]
  Karel Dekimpe and Bettina Eick.
  Computational aspects of group extensions and their application in topology.
  Submitted, 2001.
[DE1]
  Karel Dekimpe and Bettina Eick.
  Computations with almost crystallographic groups.
  Submitted, 2001.
[KD]
  Karel Dekimpe.
  Almost-Bieberbach Groups: Affine and Polynomial Structures, volume 1639 of Lecture Notes in Mathematics.
  Springer-Verlag, Heidelberg, 1996.
[DM]
  An Descheemaeker and Wim Malfait.
  P-localization of relative groups.
  Journal of Pure and Applied Algebra, 159(1), 2001.
[LEE]
  Kyung Bai Lee.
  There are only finitely many infra-nilmanifolds under each nilmanifold.
  Quart. J. Math. Oxford, 39(2):61--66, 1988.

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