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2. I. I. Vorovich and V. A. Babeshko, Dynamic Mixed Problems of Elasticity Theory for Non-Classical Domains (Nauka, Moscow, 1979) [in Russian].
3. L. A. Galin, Contact Problems of the Theory of Elasticity and Viscoelasticity (Nauka, Moscow, 1980) [in Russian].
4. I. Ya. Shtaerman, Contact Problem of Elasticity Theory (Gostekhizdat, Moscow, 1949) [in Russian].
5. I. G. Goryacheva and M. N. Dobychin, Contact Problems of Tribology (Mashinostroenie, Moscow, 1988) [in Russian].