1. M. M. Mikhailov, Izv. Vyssh. Uchebn. Zaved., Fiz., No. 7, 32 (1985).
2. M. M. Mikhailov and B. I. Kuznetsov, Radiation-Stimulated Phenomena in Solids [in Russian], Izd. UPI, Sverdlovsk (1984).
3. V. D. Chernyi, Author's Abstract of Candidate Thesis, MEI (1977).
4. R. L. Weither and W. C. Tait, Phys. Rev.,166, 791 (1968);5, 623 (1972).
5. D. C. Thomas, J. Phys. Chem. Solids,15, 86 (1960).