1. S. S. Manson, ASTM STP 520 (American Society for Testing and Materials, Philadelphia, PA, 1973) p. 744.
2. M. Kitagawa, ASTM STP 519 (American Society for Testing and Materials, Philadelphia, PA, 1973) p. 58.
3. K. U. Snoeden, in “Cavities and Cracks in Creep and Fatigue”, edited by J. Gittus (Applied Science, London 1981) p. 259.
4. S. Taira, M. Fujino and M. Yoshida, J. Soc. Mater. Sci. Jpn
27 (1978) 447 (in Japanese).
5. H. Iizuka and M. Tanaka, Mater. High Temp.
9(1) (1991) 17