1. V. S. Letokhov and N. D. Ustinov, High-Power Lasers and Their Use [in Russian], Sov. Radio, Moscow (1980).
2. V. T. Zagorodnyuk and D. Ya. Parshin, Effective Coupling of Lasers with Commerical Objects [in Russian], Svyaz', Moscow (1979).
3. L. V. Tarasov, Lasers and Their Use [in Russian], Radio i Svyaz', Moscow (1983).
4. G. A. Machulka, Machining Glass with Lasers [in Russian], Sov. Radio, Moscow (1973).
5. J. F. Ready, Commercial Applications of Lasers [Russian translation], Mir, Moscow (1981).