1. I. B. Vitrishchak, A. N. Soms, and A. A. Tarasov, Zh. Tekh. Fiz. 44, 1055 (1974) [Sov. Phys. Tech. Phys. 19, 664 (1974)].
2. Yu. V. Petrun’kin and N. M. Kozhevnikov, Tr. Leningr. Politekh. Inst. im. M.I. Kalinina, No. 366, 12 (1979).
3. Yu. M. Klimkov, Applied Laser Optics (Mashinostroenie, Moscow, 1985).
4. A. A. Livshits and A. L. Sokolov, Tr. Mosk. Energ. Inst., No. 164, 92 (1988).
5. J. P. McGuir and R. A. Chipman, Appl. Opt. 33, 5080 (1994).