1. 1) Y. Iwata, S. Dong, Y. Sugiyama and H. Iwahori: JFS 83 (2011) 421–426.
2. 2) Y. Iwata, S. Dong, Y. Sugiyama and H. Iwahori: Mater. Trans. 53 (2012) 483–488.
3. 3) S. Tanikawa, K. Asai, Y. Yang, H. Nomura and E. Kato: Rep. JFS Meeting 139 (2001) p. 134.
4. 4) Y. Sugiyama, H. Iwahori, K. Yonekura and Y. Ookochi: IMONO 66 (1994) 412–417.
5. 5) N. Nishi, H. Sasaki, T. Hirabara and Y. Takahashi: IMONO 60 (1988) 777–783.