1. 1) M. S. RASHID : SAE Paper 760206, (1976)
2. 2) J. H. BUCHER and E. G. HAMBURG : SAE Paper 770164, (1977)
3. 3) A. P. COLDREN and G. TITHER : J. Metals, 30 (1978), No. 4, p. 6
4. 6) T. FURUKAWA, H. MORIKAWA, H. TAKECHI, and K. KOYAMA : Proc. of Structure and Properties of Dual-Phase Steels, ed. by R. A. KOT and J. W. MORRIS, (1979), p. 281
5. 12) P. E. REPAS : Ironmaking and Steelmaking (1980) Aug., p. 12