The World and Expression of the Tanka Poet Nakagawa Yoichi : on the poeems in "Shin Manyoshu". Journal of the Farulty of Culture-Information. 2002. 1, 1-16
The Rainbow and Japanese Literature(10)-About Japanese Dictionaries(1), In Ancient Times-. Journal of Sugiyama Jogakuen University No. 32(Humanities). 2001. 32, 63-77