1. Ya. M. Potak, High-Strength Steels [in Russian], Metallurgiya, Moscow (1972), p. 175.
2. E. A. Ul'yanin, Corrosion-Resistant Steels and Alloys [in Russian], Metallurgiya, Moscow (1980), p. 160.
3. A. V. Anashkin, A. V. Belov, A. A. Sokolov, et al., "Thermal cycling of carbon-steel wire," Metalloved. Term. Obrab. Met., No. 2, 10?12 (1988).
4. V. M. Doronin, Heat Treatment of Carbon and Alloy Steels [in Russian], Metallurgizdat, Moscow (1955), p. 296.
5. L. P. Karpov, "Verification of rod hardness on ÉMID-3 instrument," Defektoskopiya, No. 2, 92?93 (1966).