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2. 2. K.-J. Bathe, E. L. Wilson, Numerical Methods in Finite Element Analysis, Prentice-Hall, Englewood Cliffs (1976).
3. 3. K. Washizu, Variational Methods in Elasticity and Plasticity, Pergamon Press, Oxford (1982).
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5. 5. E. I. Grigolyuk, V. I. Shalashilin, "Method of continuation with respect to the parameter in problems of nonlinear deformation of rods, plates and shells," Issled. Teor. Plast. Obol., Iss. 17, Part 1, 3-58 (1984) (in Russian).