1. Proteus, commercial brochure on “Shape-memory alloys”. Proteus, Stasegemsestwg 110E-B 8500 Kortrijk, Belgium (Kyodokumiai Insatsu, Nagaoka).
2. R. Shrout, D. Moffatt and W. Huebner, J. Mater. Sci. 26 (1991) 145.
3. L. L. Rohlfing, R. E. Newnham, S. M. Pilgrim and J. Runt, J. Wave-Mater. Interact. 3 (1988) 273.
4. E. Kato and M. Hasegwa, J. Chem. Soc. Jpn Ind. Chem. Sect. 70 [3] (1967) 252.
5. T. Ota, I. Yamai and I. Takahashi, in “29th Ceramics Basics Science Symposium”. Nagaoka, Japan, 24–25 January 1991, 1A08 (1991) p. 8.