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2. 2) N. P. GOSS : Trans. ASM, 29 (1941), p. 20
3. 3) R. L. WHITELEY and D. W. WISE : Flat Rolled Product III, ed. by A. E. EARHART (1962), p. 47 [Inter-science]
4. 5) H. TAKECHI, H. KATO and S. NAGASHIMA : Trans. Metall. Soc. AIME, 242 (1968), p. 56
5. 6) P. N. RICHARDS : J. Iron Steel Inst., 207 (1969), p. 1333