Ref:

(1) Journal of the European Ceramic Society 26 (2006) 639–645

(2) 日本 セラ ミックス協会学術論文誌 98 [10] 1103-08 (1990)

(3) Journal of the Ceramic Society of Japan 100 [6] 797-802 (1992)

(4) Phys Chem Minerals (2014) 41:361–371