1. 1) B. G. Thomas and H. Bai: 18th Process Technology Division Conf. Proc., Vol. 18, ISS, Warrendale, PA, (2001), 895.
2. 2) K. Rackers and B. G. Thomas: 78th Steelmaking Conf., Vol. 78, Iron & Steel Society, Warrendale, PA, (1995), 723.
3. 3) R. B. Snow and J. A. Shea: J. Am. Ceram. Soc., 32 (1949), 187.
4. 4) S. N. Singh: Metall. Trans., 5 (1974), 2165.
5. 5) Y. Miki, H. Kitaoka, T. Sakuraya and T. Fujii: ISIJ Int., 32 (1992), 142.