1. C. H. P. Lupis:Acta Met., 1968, vol. 16, pp. 1365–75.
2. F. D. Richardson and W. E. Dennis:J. Iron Steel Inst., 1953, vol. 175, pp. 257–63.
3. K. Goto, S. Ban-ya, and S. Motoba:Tetsu to Hagane Overseas, 1963, vol. 3, pp. 184–89.
4. T. Fuwa and J. Chipman:Tram. TMS-AIME, 1959, vol. 215, pp. 708–16.
5. R. R. Zupp and D. A. Stevenson:Trans. TMS-AIME, 1966, vol. 236, pp. 1316–23.