1. O. Imai, H. Ohara, T. Yoshioka and A. Doi: Nisshin Electronic Tech. Bull. Vol. 33 (1988), p.78 (in Japanese).
2. K. Takeda, 1988, Ceramic Coatings, (Nikkan Kogyo Shinbun Sha, Japan 1988).
3. For examples; K. Shiozawa, S. Nishino and K. Handa: Trans. Jpn. Soc. Mech. Eng., Vol. 57(1991) p.1687.
4. R. Ebara, H. Nakajima, T. Odohira, T. Wada and M. Hatano: Proc. of 16th Turbomachinery Symp., Dallas (1987) p.3.
5. K. Saruki, S. Hotta, H. Fujita and T. Arai: J. Soc. Mater. Sci. Vol. 37 (1988) p.770.