1. G. S. Pisarenko and A. A. Lebedev, Deformation and strength of materials in a multiaxial stress state [in Russian], Naukova Dumka, Kiev (1976).
2. G. Taylor, ?Plastic strain in metals,? J. Inst. Met.,62, No. 10, 307?324 (1938).
3. S. D. Volkov, Statistical Theory of Strength [in Russian], Mashinostroenie, Moscow (1960).
4. A. G. Kostyuk, ?Statistical theory of plasticity of polycrystalline metals,? Inzh. Zh., No. 6, 60?69 (1968).
5. A. V. Gur'ev and E. P. Bogdanov, ?Conditions of macroyielding of a polycrystal in a multiaxial stress state, determined by statistical relationships of distribution of tangential stresses in active slip systems,? in: Strength of Materials and Structural Members in a Multiaxial Stress State, Proceedings of 2nd All-Union Symposium, Institute of Problems of Strength, Kiev (1984), p. 51.