1. 1) M. A. Dibble: Machine Design, 6 (1991), 44.
2. 2) V. Lupinc: Proc. on High Temperature Alloys for Gas Turbines, ed. by B. R. Brumentaud et al., D. Reidel Pu. Co., London, (1982), p. 268.
3. 3) N. S. Stoloff: The Superalloys, ed. by C. T. Sims and W. C. Hagel, Interscience (1972), p. 74.
4. 4) R. Lagneborg and B. Bergman: Metal Science, January (1976), 20.
5. 5) P. J. Henderson: NPL Report (1981).