CRYSTAL is a
quantum chemistryab initio program, designed primarily for calculations on crystals (3 dimensions), slabs (2 dimensions) and polymers (1 dimension) using translational symmetry, but it can be used for single molecules. [ "Computational Chemistry", David Young, Wiley-Interscience, 2001. Appendix A. A.2.2 pg 334, Crystal ] It is written by V.R. Saunders, R. Dovesi, C. Roetti, R. Orlando, C.M. Zicovich-Wilson, N.M. Harrison, K. Doll, B. Civalleri, I.J. Bush, Ph. D’Arco, and M. Llunell from Theoretical Chemistry Group at the University of Torinoand the Computational Materials Science Group at the Daresbury Laboratorynear Warringtonin Cheshire, England. The current version is CRYSTAL06. Earlier versions were CRYSTAL88, CRYSTAL92, CRYSTAL95, CRYSTAL98 and CRYSTAL03.
* [http://www.crystal.unito.it/ CRYSTAL]
* [http://www.cse.clrc.ac.uk/cmg/index.shtml Computational Materials Science Group]
* [http://www.theochem.unito.it/ Theoretical Chemistry Group] University of Torino
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