1. L. Prandtl, “Examples of Hencky’s Theorem Application to Equilibrium of Plastic Bodies,” in Theory of Plasticity (Izd. Inostr. Lit., Moscow, 1948), pp. 102–113 [in Russian].
2. A. Nadai, Theory of Flow and Fracture of Solids, Vol. 1 (Wiley, New York, 1950; Izd. Inostr. Lit., Moscow, 1954).
3. A. Nadai, Theory of Flow and Fracture of Solids, Vol. 2 (Wiley, New York, 1950; Izd. Inostr. Lit., Moscow, 1969).
4. V. V. Sokolovskii, Theory of Plasticity (Vysshaya Shkola, Moscow, 1969) [in Russian].
5. A. A. Il’yushin, “Problems of the Theory of Plastic Matter Flow on a Surface,” Prikl. Mat. Mekh. 18 (3), 265–288 (1954). [J. Appl.Math. Mech. (Engl. Transl.)].