Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) "加藤, 秀幸 and Kato, Hideyui","Problems of Identification of Portrayed Warriors: The Cases of “Takeda Shingen” and “Nawa Nagatoshi (?),” both by Hasegawa Nobuharu, “Ashikaga Takauji” and “Ashikaga Yoshihisa” (Part I)",The bijutsu kenkyu : the journal of art studies,,,1989-11-27,,345,1-15,https://cir.nii.ac.jp/crid/1050001201680847232,