A Collaborative Distance Learning System and its Experimental Results. - Takashi Dasai; Hisao Koizumi; Kiyoshi Yokochi (HCI (2), 1997)

Educational experiments of distance learning and reorganisation of mathematics education. - Klaus-Dieter Graf; Kiyoshi Yokochi (Secondary School Mathematics in the World of Communication Technology, 1997)

Interactive distance learning between Japan and Germany. - Hisao Koizumi; Takashi Dasai; Klaus-Dieter Graf; Kiyoshi Yokochi; Seiji Moriya (Communications and Networking in Education, 1999)

Students teach students. - Klaus-Dieter Graf; Kiyoshi Yokochi (The Bookmark of the School of the Future, 2000)