1. 1) T. Miwa, H. Okuda, M. Osame, S. Watakabe and K. Saito: EECR-METEC InSteelCon 2011, Steel Institute VDEh, Düsseldorf, (2011), Session 1, CD-ROM.
2. 2) Y. Nosaka and Y. Hosotani: Tetsu-to-Hagané, 75 (1989), 1957.
3. 3) T. Kawaguchi, S. Kasama and T. Inazumi: Tetsu-to-Hagané, 78 (1992), 1053.
4. 4) H. Ueno, K. Yamaguchi, T. Orimoto, Y. Okuno, S. Matsunaga, H. Oda, S. Amano and M. Nose: Proc. 1st Intern. Cong. on Sci. Tech. Ironmaking, ISIJ, Tokyo, (1994), 217.
5. 5) M. Hino, T. Nagasaka, A. Katsumata, K. Higuchi, K. Yamaguchi and N. Kon-no: Metall. Mater. Trans. B, 30B (1999), 671.