1. A. H. Cottrell and B. A. Bilby, Proc. Phys. Soc. A
62 (1949) 49.
2. J. D. Baird, Met. Rev.
16 (1971) 1.
3. G. E. Dieter, “Mechanical Metallurgy”, 2nd Edn (McGraw-Hill, New York, 1976) p. 208.
4. E. C. Leslie, “The Physical Metallurgy of Steels” (McGraw-Hill, New York, 1981) p. 79.
5. R. D. Butler and D. V. Wilson, J. Iron Steel Inst.
201 (1963) 16.