A Metadatabase System for Semantic Image Search by a Mathematical Model of Meaning. - Yasushi Kiyoki; Takashi Kitagawa; Takanari Hayama (SIGMOD Rec., 1994)

A Metadatabase System for Semantic Image Search by a Mathematical Model of Meaning. - Yasushi Kiyoki; Takashi Kitagawa; Takanari Hayama (Multimedia Data Management, 1998)

Position Paper: Digital Media Archive for Academic Resources. - Takanari Hayama; Eiji Kawaguchi; Yasushi Kiyoki (EJC, 2005)