1. Howard, J., Waddington, T.C.: Advances in infrared and raman spectroscopy. Clark, R.J.H., Hester, R.E. (eds.), Vol. 7, Chap. 3. Heyden and Sons 1980
2. Springer, T.: Hydrogen in Metals I. In: Topics in Applied Physics. Alefeld, G., Völkl, J. (eds.), Vol. 28, Chap. 4. Berlin, Heidelberg, New York: Springer-Verlag 1978
3. Boland, B.C.: In: Proceedings of the Sixth Meeting of the International Collaboration on Advanced Neutron Sources. Argonne, ILL (1982) Argonne Rept-82-80; Carlile, C.J.: Private communication
4. Squires, G.L.: Thermal neutron scattering. Cambridge: University Press 1978
5. Lovesey, S.W.: Condensed matter physics, dynamic correlations. Massachusetts: Benjamin 1980