Experimental Knowledge Processing System. - Yuichi Fujii; Hirokazu Taki (FGCS, 1988)

Methods for Partition of Target Systems in Qualitative Reasoning. - Kiyokazu Sakane; Masaru Ohki; Jun Sawamoto; Yuichi Fujii (FGCS, 1988)

U-brella: A portable umbrella-shaped device for vibrationizing information. - Yuichi Fujii; Fumio Kishino; Kazuyuki Fujita; Yuichi Itoh (VR, 2013)