Hagiwara, M., Hoshina, T., Takeda, H. & Tsurumi, T., 2014, Electroceramics in Japan XVI.Trans Tech Publications Ltd, p. 3-64 p. (Key Engineering Materials; vol. 582).
Hagiwara, M., Takahashi, S., Hoshina, T., Takeda, H., Sakurai, O. & Tsurumi, T., 2010, Electroceramics in Japan XIII.Trans Tech Publications Ltd, p. 47-504 p. (Key Engineering Materials; vol. 445).