1. 1) M. Semlitsch, F. Staub and H. Weber: Biomed. Tech. 30 (1985) 334.
2. 2) Y. Okazaki, Y. Ito, A. Ito and T. Tateishi: Mater. Trans., JIM 34 (1993) 1217.
3. 3) D. Kuroda, M. Niinomi and M. Morinaga: Iron Steel Inst. Jpn. 9 (1996) 421.
4. 4) H. Tada, H. Hosoda, M. Takeuchi, K. Hamada, K. Mizuuchi, K. Aoki and K. Inoue: The Third Pacific Rim International Conference on Advanced Materials and Processing (PRICM3), eds. M.A. Imam et al., (TMS 2, 1998) 3086.
5. 5) K. Nitta, S. Watanabe, N. Masahashi, H. Hosoda and S. Hanada, Proc. Intl. Symp. Structural Biomaterials for the 21st Century, (2001) 25.