1. P. GRIFFITHS and C. HAMMOND, Acta Metall. 20 (1972) 935.
2. Idem., Ibid. 7 (1973) 793.
3. C. H. HAMILTION, S. P. AGRAWAL, N. E. PATON, J. C. CHESNUTT and E. D. WEISERT, Rep. J/0442A/Cb, undated (Rockwell International Science Centre).
4. G. C. MORGAN and C. HAMMOND, Mat. Sci. Eng. 86 (1987) 159.
5. A. SALAM and C. HAMMOND, Proc. Conf. France (1988) 1355.