1. J. E. HATCH, in ?Aluminium: Properties and Physical Metallurgy? (ASM, Metals Park, Ohio, 1984) pp. 137, 205.
2. B. CHAMBERLAIN and V. J. ZANEK,AFS Trans. 81 (1973) 322.
3. P. D. HESS and E. V. BLACKMAN, ibid.83 (1975) 87.
4. B. CLOSSET and J. E. GRUZELSKI, ibid.89 (1981) 801.
5. Idem,,Metall. Trans. 13A (1982) 945.