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3. G. L. Fisenko, The Stability of Pit Flanks and Banks [in Russian], Nedra, Moscow (1965).
4. V. K. Tsvetkov, Calculating the Stability of Flanks and Banks [in Russian], Nizhne-Volzhskoe Kn. Izd., Volgograd (1979).
5. L. N. Rasskazov and A. A. Belyakov, “Evaluation of the three-dimensional stress-strain state of a rock-earth dam,” Gidrotekh. Stroitel., No. 2 (1982).