1. 1) R. G. Rowe: High Temperature Aluminides and Intermetallics, ed. by S. H. Whang, C. T. Liu, D. P. Pope and J. O. Stiegler, Materials Research Society, Pennsylvania, (1990), p. 373.
2. 2) Y.-W. Kim and F. H. Froes: ibid, p. 465.
3. 3) W. Cho, A. W. Thompson and J. C. Williams: Metall. Trans., 21A (1990), 641.
4. 4) D. P. Deluca, R. A. Cowles, F. K. Haake and K. P. Holland: WRDC-TR-89-4136, Wright Research & Development Center, (1989).
5. 5) M. J. Blackburn and M. P. Smith: WRDC-TR-89-4095, Wright Research & Development Center, (1989).