1. S. WATANABE,Bull. Jpn. Inst. Metals 19 (1980) 804.
2. M. A. GROSSMAN, M. ASIMOW and S. F. URBAN, ?Hardenability of alloy steels? (American Society of Metals, Metals Park, Ohio, 1939).
3. Y. OHMORI, H. OHTANI and T. KUNITAKE,Met. Sci. 8 (1974) 357.
4. W. C. LESLIE, ?The physical metallurgy of steels? (McGraw-Hill, New York, 1982).