VideoMAP and VideoSpaceIcon: tools for anatomizing video content. - Yoshinobu Tonomura; Akihito Akutsu; Kiyotaka Otsuji; Toru Sadakata (INTERCHI, 1993)

CyberForum on InterSpace. - Toru Sadakata; Takashi Yamana; Tetsuo Tajiri; Hisashi Hadeishi (HCI (2), 1997)

Discovery Search System That Supports the User's Interest Using the Referrals of Other Users. - Shinji Miyahara; Toru Sadakata; Hidenori Okuda; Masahiro Oku (Int. J. Hum. Comput. Interact., 2007)