International
Tables for Crystallography Volume D Physical properties of crystals Edited by A. Authier © International Union of Crystallography 2006 |
International Tables for Crystallography (2006). Vol. D. ch. 1.1, p. 15
Section 1.1.4.6.2.2. Case of a centre of symmetry
a
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All the diagonal components are in this case equal to −1. One thus has: