1. Ross, P. A., 1926, Phys. Rev. 28: 425.
2. Macgillavry, C. H. and G. D. Rieck, 1962, International Tables for X-Ray Crystallography, Vol. 111,78, Kynoch Press, Birmingham, UK.
3. Kirkpatrick, P., 1939, Rev. Sci. Inst., 10: 186.
4. Cullity, B. D., 1967, Elements of X-Ray Diffraction, pp. 211, Addison-Wesley, Reading, Mass.
5. Soules, J. A., W. L. Gordon, and C. H. Shaw, 1956, Rev. Sci. Inst. 27(1): 12.