1. Nishida, S. and Mizoguchi, S. (1985) The Society of Materials Science (JSMS), Committee on Fractography, Subcommittee on Environmental Fracture, Preprint FE16, 1 (in Japanese), Kyoto, Japan
2. Nishida, S. and Mizoguchi, S. (1984) Sectional Meeting on Environmental Strength of Steels, Preprint ISE-6-5, 1, Tokyo
3. Ebara, R. (1984) Sectional Meeting on Environmental Strength of Steels, Preprint ISE-6-5, 1, Tokyo
4. Nagao, Y. (1985) The Society of Materials Science (JSMS), Committee on Fractography, Subcommittee on Environmental Fracture, Preprint FE15, 1, Kyoto, Japan