1. E. I. Aguf and V. Z. Vasil’ev, “The first basic problem for a layer with circular hole,” Izv. Akad. Nauk SSSR. Mekh. Tverd. Tela, No. 4, 68–77 (1980).
2. N. Kh. Arutyunyan and B. L. Abramyan, “Some axisymmetric contact problems for the half space and an elastic layer with vertical cylindrical hole,” Izv. Akad. Nauk Arm. SSR. Ser. Mekh., 22, No. 2, 3–13 (1969).
3. K. V. Vishnevskii and R. M. Kushnir, “Boundary integral equations for a body with inhomogeneous inclusions,” Mat. Met. Fiz.- Mekh. Polya, 39, No. 1, 37–41 (1996); English translation: J. Math. Sci., 86, No. 2, 2552–2555 (1997). https://doi.org/10.1007/BF02356095.
4. I. I. Vorovich and V. A. Babeshko, Dynamic Mixed Problems of the Theory of Elasticity for Nonclassical Domains [in Russian], Nauka, Moscow (1979).
5. V. T. Grinchenko and V. V. Meleshko, Harmonic Vibrations and Waves in Elastic Bodies [in Russian], Naukova Dumka, Kiev (1981).