1. 1) J. H. G. Monypenny: Stainless Iron and Steel, 1 (1951), 9;
2. J. H. G. Monypenny: Stainless Iron and Steel, 2 (1951), 41.
3. 2) Armco Steel Corp: Heat Treatment of Stainless Steels, 1945.
4. 3) Sato et al.: J. Japan Inst. Metals, 22 (1958), 484.
5. 4) R. Hashiguchi: Metal Physics. (in Japanese) 1959 Special issue.