# Design : a GAP 4 package - References

[Extrep]
  Peter J. Cameron, Peter Dobcsányi, John P. Morgan, and Leonard H. Soicher.
  The external representation of block designs (version 2.0), 2004.
  http://designtheory.org/library/extrep/.
[GAPDoc]
  Frank L"ubeck and Max Neunh"offer.
  The GAPDoc package for GAP (version 0.9999), 2004.
  http://www.math.rwth-aachen.de/~Frank.Luebeck/GAPDoc/.
[Nauty]
  Brendan D. McKay.
  The nauty package (version 2.0b5), 1996.
  http://cs.anu.edu.au/people/bdm/nauty/.
[Grape]
  Leonard H. Soicher.
  The GRAPE package for GAP (version 4.2), 2004.
  http://www.maths.qmul.ac.uk/~leonard/grape/.

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