JUPITER: A Kanji Learning Environment Focusing on a Learner's Browsing. - Youji Ochi; Yoneo Yano; Riko Wakita; Toshihiro Hayashi (APCHI, 1998)

Development of Web Customize System for Sharing Educational Resources. - Youji Ochi; Yoneo Yano; Riko Wakita (WISE (2), 2000)

Web Based Digital Resource Library Tracing Author's Quotation. - Youji Ochi; Yoneo Yano; Riko Wakita (Web Intelligence, 2001)

Web Based Self-directed Learning Environment Using Learner's Annotation. - Youji Ochi; Riko Wakita; Yoneo Yano (ICCE, 2002)