1. J. Kayashita, I. Shimaoka, M. Yamazaki. and N. Kato, in “Current Advances in Buckwheat Research,” Vol. 2, ed. by T. Matano and A. Ujihara, Shinshu University Press, Nagano, Japan. 1995, pp. 941–946.
2. J. Kayashita, I. Shimaoka, and M. Nakajoh, in “Current Advances in Buckwheat Research,” Vol. 2, ed. by T. Matano and A. Ujihara, Shinshu University Press, Nagano, Japan, 1995, pp. 919–926.