1. Abragam, A.,1961, Principles of Nuclear Magnetism(Oxford University Press, London).
2. Bloembergen, N., 1955, Report on the Conference on Defects in Crystalline Solids(Physical Society, London).
3. Eshelby, J. D., 1956, in Solid State Physics, Vol. 3 (Academic Press, New York).
4. Flynn, C. P., 1972, Point Defects and Diffusion(Clarendon Press, New York).
5. Heine, V.. 1970, in Solid State Physics, Vol. 24 (Academic Press, New York).