A general framework of constraint propagation for diagnostic systems. - Ryuji Tsuchiya; Takahiko Ogino (Jerusalem Conference on Information Technology, 1990)

CyberRail - Information Infrastructure for New Intermodal Transport Business Model. - Takahiko Ogino (IFIP Congress Topical Sessions, 2004)

Requirement-driven Approach to Interoperable Traveler Support System Specification. - Ryuji Tsuchiya; Akihiko Matsuoka; Koichi Goto; Kiyotaka Seki; Takahiko Ogino (RE, 2004)