Info-Plaza: A social information filtering system for the World-Wide Web. - Shinichi Hiraiwa; Youji Kohda (ICPADS, 1996)

SpaceFusion: A Multi-Server Architecture for Shared Virtual Environments. - Hiroyasu Sugano; Koji Otani; Haruyasu Ueda; Shinichi Hiraiwa; Susumu Endo; Youji Kohda (VRML, 1997)