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