1. B. A. Drozdovskii and Ya. B. Fridman, Effect of Cracks on Mechanical Properties of Structural Steels (Metallurgizdat, Moscow, 1960) [in Russian].
2. Impact Testing of Metals: Proceedings of the 72nd Annual Meeting of the American Society for Testing and Materials, Atlantic City, N. J., 1969 (ASTM STP 466, 1970; Mir, Moscow, 1973).
3. W. F. Brown and J. E. Srawley, Plane Strain Crack Toughness Testing of High Strength Metallic Materials (ASTM STP 410, 1966; Mir, Moscow, 1972).
4. M. N. Georgiev, Viscosity of Low-Carbon Steels (Metallurgiya, Moscow, 1973) [in Russian].
5. Ya. B. Fridman, Mechanical Properties of Metals (Mashinostroenie, Moscow, 1974), Vol. 2 [in Russian].