1. 1) S. J. Hales, T. T. Bales, W. F. James and J. M. Shinn: Superplasticity in Aerospace II, (Edited by Terry R. McNelley and H. Charles Heikkenen), The Minerals, Metals & Materials Society, (1990), 167.
2. 2) 平 博仁, 吉野保明, 岩上敏男, 野田 稔, 工藤 雅, 脇田公仁彦, 平田良三: 川崎重工技報, 111 (1991), 18.
3. 3) A. J. Barnes: Materials Science Forum, 170–172, (1994), 701.
4. 4) R. J. Stracery and R. G. Butler: Materials Science Forum, 170–172, (1994), 725.
5. 5) T. Tsuzuku: Materials Science Forum, 304–306, (1999), 831.