1. 1. N. S. Bulychev, Mechanics of Underground Structures in Examples and Problems [in Russian], Nedra, Moscow (1989).
2. 2. A. S. Kosmodamianskii, Stress State of Anisotropic Media with Holes or Cavities [in Russian], Vyshcha Shkola, Kiev-Donetsk (1976).
3. 3. S. G. Lekhnitskii, Anisotropic Plates [in Russian], Gostekhizdat, Moscow (1957)
4. English translation: Gordon and Breach Sci. Pub., New York (1968).
5. 4. O. V. Maksymovych, S. V. Lavrenchuk, T. Ya. Solyar, "Contact problem for an anisotropic half plane with cracks," Mat. Met. Fiz.-Mekh. Polya, 60, No. 1, 141-148 (2017)