1. Alers G A 1965Physical acoustics (New York: Academic Press) Vol.3B
2. Benson G C and Gill E K 1966Tables of integral functions related to Debye-Waller factor (Ottawa: National Research Council of Canada)
3. Blackman M 1955Handbuch der physik (Berlin: Springer Verlag) Vol. 7, Part I
4. Cromer D T and Mann J B 1968Acta Crystallogr. A24 321
5. Dean J A (ed.) 1979Lange’s handbook of chemistry (New York: McGraw Hill Book Company) 12 edn