1. D. A. de Wolf, IEEE Trans.,AP-19, No. 2, 254 (1971).
2. A. G. Vinogradov and Yu. A. Kravtsov, Izv. VUZ., Radiofiz.,16, No. 7, 1055 (1973).
3. V. V. Tamokin, Izv. VUZ., Radiofiz.,9, No. 6, 1124 (1966).
4. V. L. Tatarskii, Propagation of Waves in a Turbulent Atmosphere [in Russian], Izd. Nauka, Moscow (1967).
5. M. E. Gracheva, A. S. Gurvich, and M. A. Kallistratova, Izv. VUZ., Radiofiz.13, No. 1, 56 (1970).