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4. K. S. Basniev, N. M. Dmitriev, R. D. Kanevskaya, and V. M. Maksimov, Subsurface Hydromechanics [in Russian], Institute of Computer Research, Moscow & Izhevsk (2005).
5. Yu. I. Sirotin and M. P. Shaskolskaya, Fundamentals of Crystal Physics [in Russian], Nauka, Moscow (1975).