1. 1) W. L. Bell, T. Lauritzen and S. Vaidyanathan: Proc. Topical Conf. on Ferritic Alloys for Use in Nuclear Energy Technologies, ed. by J. W. Davis and D. J. Michel, The Met. Soc. AIME, Pennsylvania, (1984), p. 113.
2. 2) C. Willby and J. Walters: Proc. Intern. Conf. on Ferritic Steels for Fast Reactor Steam Generators, ed. by S. F. Pugh and E. A. Little, Brit. Nuc. Ener. Soc., London, (1978), p. 40.
3. 3) M. K. Booker, V. K. Sikka and B. L. P. Booker: Proc. Intern. Conf. on Fabrication, Properties and Applications of Ferritic Steels for High Temperature Applications, ed. by Ashok Khare, ASM, Metals Park, Ohio, (1982), p. 257.
4. 4) E. A. Little: Proc. Intern. Conf. on Materials for Nuclear Reactor Core Applications, BNES, London, (1988), 2, p. 47.
5. 5) T. Orr, F. R. Beckitt and G. D. Fawkes: Proc. Intern. Conf. on Ferritic Steels for Fast Reactor Steam Generators, ed. by S. F. Pugh and E. A. Little, BNES, London, (1978), p. 91.