XGAP : a GAP 4 package - References
- [Cav86]
- 
Alberto Cavicchioli.
 A countable class of non-homeomorphic homology spheres with Heegaard
  genus two.
 Geom. Dedicata, 20:345--348, 1986.
- [FJ65]
- 
K. Ferber and H. Jürgensen.
 A Programme for Drawing a Lattice.
 In J. Leech, editor, Computational Problems in Abstract
  Algebra, pages 83--86, 1970.
- [HR91]
- 
Derek F. Holt and Sarah Rees.
 A Graphics System for Displaying Finite Quotients of Finitely
  Presented Groups.
 In L. Finkelstein and W. M. Kantor, editors, Groups and
  Computation, pages 113--126, 1991.
- [SK95]
- 
Susanne Keitemeier.
 Graphische Darstellung von Untergruppendiagrammen im
  Computeralgebraprogramm GAP.
 Diplomarbeit, 1995.
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XGAP manual
November 2016