1. 1) J. Takamura and S. Mizoguchi : Proc. of 6th Int. Iron and Steel Cong., Tokyo, Vol. I (1990), p. 591 [ISIJ]
2. 2) C. E. Sims and F. B. Dahle : Trans. Am. Foundarymen's Ass., 46 (1938), p. 65
3. 3) W. Dahl, H. Hengstenberg and G. Düren : Stahl u. Eisen, 86 (1966). p. 782
4. 4) P. P. Mohla and J. Beech : JISI., 207 (1969), p. 177
5. 5) H. Fredriksson and M. Hillert : JISI., 209 (1971), p. 109