1. Abroskin, A.G., Nolde, S.E., Fadeev, V.V., and Chubarov, V.V., 1988, Soy. Phys. Doke (English translation from Dokl. Acad. Nauk SSSR, 1988, 299(2):351), 33:215.
2. Akhmanov, S.A., Gordienko, V.M., Kosovsky, L.A., Kurochkin, N.N., Pogosov, G.A., and Priezzhev, A.V., 1991, Izvestiya Akad. Nauk SSSR, Seriya Fiz. 55:194.
3. Bekkiev, A.I., Gogolinskaia, T.A., and Fadeev, V.V., 1983, Soy. Phys. Dokl. (English translation from Dokl. Acad. Nauk SSSR, 1983, 271(4):849), 28:639.
4. Bilbro, J.W., 1980, Optical Engineering. 19:533.
5. Bristow, M., Nielsen, D., Bundy, D., and Furtek, R., 1981, Appl. Optics. 20:2889.