1. T. A. Shirokova, Akust. zh.,9, 101, 1963.
2. G. C. Knollman, J. Appl. Phys.36, 3704, 1965.
3. N. G. Denisov and L. M. Erukhimov, Geomagnetizm i aeronomiya,6, 695, 1966.
4. V. A. Alimov and L. M. Erukhimov, Izvestiya VUZ. Radiofizika [Radiophysics and Quantum Electronics],10, 620, 1967.
5. V. I. Tatarskii, Theory of Fluctuation Effects in Wave Propagation in a Turbulent Atmosphere [in Russian], izd. AN SSSR, Moscow, 1959.