References
- Cullity, B. D. Elements of X-ray Diffraction, p. 502, Addison-Wesley Publishing Company, Inc. (1978)
- Donnay, J. D. H. and Donnay Gabrielle. International Tables for X-ray Crystallography, Vo.l. II, Edited by John S. Kasper and Kathleen Lonsdale, p. 106-119, D.Reidel Publishing Company, Dordrecht/Boston/Lancaster (1985)
- Koch, E. International Tables for Crystallography Volume C, Edited by A. J. C. Wilson, pp. 2-9, Kluwer Academic Publishers, Dordrecht/Boston/London (1995)