2) T. Akashi, I. Sugano, Y. Kenmoku, Y. Shimada, and T. Tsuji, “Proc. Intern. Conf. Ferrites,” Univ. Tokyo Press, Japan (1971), p. 183.
3) H. Takei, T. Kanzaki, Y. Tamura, and T. Katsura, Meeting of the Chemical Society of Japan in Tohoku District, Akita, October 1977, Abstr. No. 1B02.
4) K. Kaneko, T. Kanzaki, Y. Tamaura, and T. Katsura, Meeting of the Chemical Society of Japan in Tohoku District, Akita, October 1977, Abstr. No. 1B03.