1. Edahiro,J.; Escape from Energy Crisis (SB Creative Corp., 2008) , p. 16.
2. Fujimoto,M., Fujimoto,H., Yamashita,H., Yamamoto,H.; Matsuda Technical Review, Vol.30 (2012), p.214.
3. G.C.Chang,W.Phucharoen, R.A.Miller ;Surface and Coating Technology,Vol.30 (1987) ,p.13.
4. Hasegawa,K.; A Choice for Post-Nuclear Society, The Age of New Energy Revolution (Shin-yo-sha, 2011) , p. 246.
5. Hashimoto,K.,, Kobayashi,K., Yamaguchi,T.; Ceramic Materials (Sankyo Publishing Co., Ltd., 2010) , p. 94.