1. 2) C. CONE : Iron Steel Eng., 39 (1962) 3, p. 80
2. 3) M. B. PIERSON : J. Metals, 23 (1971) 12, p. 26
3. 4) J. L. ARNOLD, F. C. DUNBAR, and C. FLINGHUM : Met. Trans., 8 B (1977), p. 399
4. 8) R. S. BUDRYS and R. M. BRICK : Met. Trans., 2 (1971) 1, p. 103
5. 10) J. GRIFFITHS : Brussels Wire Conf. (GBR), (1977), (A) 81