1. 1) E. T. Turkdogan and J. Pearson: J. Iron Steel Inst., 175 (1953), 393.
2. 2) M. Iwase, N. Yamada, K. Nishida and E. Ichise: Trans. Iron Steel Soc. AIME, 4 (1984), 69.
3. 3) O. Kubaschewski, C. B. Alcock and P. J. Spencer: Materials Thermochemistry, 6th Ed., Pergamon Press, Oxford, (1993), 257.
4. 4) G. K. Sigworth and J. F. Elliott: Met. Sci., 8 (1974), 298.
5. 5) H. Suito, Y. Hayashida and Y. Takahashi: Tetsu-to-Hagané, 63 (1977), 1252.