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2. A. G. Gorshkov, A. L. Medvedskii, L. N. Rabinskii, and D. V. Tarlakovskii, Waves in Continuous Media: Handbook (Fizmatlit, Moscow, 2004) [in Russian].
3. M. Abramowitz and I. A. Stegan, Handbook of Mathematical Functions, with Formulas, Graphs and Mathematical Tables (Dover, New York, 1972).