1. M. B. Kanevskii Izv. Vyssh. Uchebn. Zaved., Radiofiz.,16, No. 4, 581 (1973).
2. E. S. Birger and N. B. Konyukhova, Radiotekh. Elektron.,14, No. 7, 1147 (1969).
3. Propagation of Ultrashort Radio Waves [in Russian], Sovetskoe Radio, Moscow (1954).
4. V. I. Tatarskii, Propagation of Waves in a Turbulent Atmosphere [in Russian], Nauka, Moscow (1967).
5. A. S. Gurvich, Radiotekh. Élektron.,13, No. 11, 1923 (1968).