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3. R. Goodman, Introduction to Rock Mechanics, 2nd Edition, John Wiley & Sons, London (1988).
4. A. D. Tomlenov, Mechanics of Metal Processing under Pressure [in Russian], Gosnauchtekhizdat Mashinostr. Lit., Moscow (1963).
5. V. V. Sokolovsky, Theory of Plasticity [in Russian], Vyssh. Shk., Moscow (1969).