1. Altmann, S. L. & Herzig, P. (1994). Point Group Theory Tables. Oxford: Clarendon Press.
2. Ascher, E. (1966). Properties of Shubnikov Point Groups, Part 1. Battelle Report, Geneva.
3. Bradley, C. J. & Cracknell, A. P. (1972). The Mathematical Theory of Symmetry in Solids. Oxford University Press.
4. Burns, G. & Glazer, A. M. (2007). Space Groups for Solid State Physicists, 2nd ed. New York: Academic Press.
5. Character tables for two space groups