1. Akhmanov S. A., Chirkin A. S.: Statisticheskiye yavleniya v nelineynoy optike. Moskovskiy Universitet, Moscow, 1971.
2. Akhmanov S. A., D'yakov Yu. E., Chirkin A. S.: Vvedenie v statisticheskuyu radiofiziku i optiku, Nauka, Moscow, 1981.
3. Chmela P.:in Proceedings of the Eighth International School of Coherent Optics (ed. O. Benda, Š. Luby). Electro-Physical Research Centre, Slovak Acad. Sci., Bratislava, 1987, p. 33.
4. Loudon R.: Rep. Progr. Phys.43 (1980) 913.
5. Schubert M., Wilhelmi B.:in Progress in Optics, Vol. 17 (ed. E. Wolf). North-Holland, Amsterdam, 1980, p. 163.