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2. V. I. Tatarskii, Izv. VUZ. Radiofizika [Soviet Radiophysics],10, no. 1, 48, 1967.
3. I. S. Gradshtein and I. M. Ryzhik, Tables of Integrals, Sums, Series, and Products [in Russian], Fizmatgiz, Moscow, 1963.
4. L. A. Chernov, Wave Propagation in a Medium with Random Inhomogeneities [in Russian], AN SSSR, Moscow, 1958.