1. 1) S. Harada: Evaluation of Strength on Ductile Cast Iron (in Japanese), Ed. by S. Harada and T. Kobayashi (AGNE Gijutsu Center, Tokyo, 1999) p. 123.
2. 2) Y. Tanaka and Y. Osafune: IMONO 64 (1992) 325–331.
3. 3) H. Kage and Y. Tanaka: IMONO 65 (1993) 382–387.
4. 4) T. Maki: IMONO 65 (1993) 420–425.
5. 5) Z. Yajima, Y. Kishi, K. Shimizu, H. Mochizuki and T. Yoshida: J. JFS 73 (2001) 649–655.