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2. I.I. Vorovich, V.A. Babeshko, Mixed Dynamic Problems in the Theory of Elasticity for Non-classical Domains (Nauka, Moscow, 1979) [in Russian].
3. A. N. Guz’, F. G. Makhort, and O. I. Gushcha, Introduction to Acoustic Elasticity (Naukova dumka, Kiev, 1977) [in Russian].
4. A. N. Guz’, Elastic Waves in Bodies with Initial (Residual) Stresses (A. S. K., Kiev, 2004) [in Russian].
5. A. L. Uglov, V. I. Erofeev, and A. N. Smirnov, Acoustic Control of Equipment during its Manufacture and Operation (Nauka, Moscow, 2009) [in Russian].