crystcat : a GAP 4 package - References
- [BBNWZ78]
- 
   H. Brown, R. Bülow, J. Neubüser, 
   H. Wondratschek, and H. Zassenhaus.
 Crystallographic Groups of Four-Dimensional Space.
 John Wiley, New York, 1978.
- [Hah95]
- 
   T. Hahn, editor.
 International Tables for Crystallography, 
              Volume A, Space-group Symmetry, 4th Edition.
 Kluwer, Dordrecht, 1995.
- [NPW81]
- 
   J. Neubüser, W. Plesken, and H. Wondratschek.
 An emendatory discursion on defining crystal systems.
 Match, 10:77--96, 1981.
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crystcat manual
May 2012