| 2002 | EDOC | Collaboration Management Framework for Integrating B-to-B and Internal Processes. | Keisuke Yano, Hirotaka Hara, Sanya Uehara |
| 2000 | EDOC | Distributed Workflow Management System for Electronic Commerce. | Nobuyuki Kanaya, Hirotaka Hara, Yoshihide Nomura, Hitoshi Komori, Tsuyoshi Ebata |
| 2000 | EDOC | Practical Experiences of Designing a Distributed Collaborative System. | Takao Ookubo, Takahide Matsutsuka, Yoshihide Nomura, Hirotaka Hara, Sanya Uehara |
| 1998 | COMPSAC | An Optimistic Method for Updating Information in Distributed Collaborative Work. | Takao Okubo, Takahide Matsutsuka, Yuka Tanaka, Hirotaka Hara, Sanya Uehara |
| 1998 | EDOC | Enterprise model-based software architecture with server component integration. | Sanya Uehara, Hirotaka Hara, Nobuyuki Kanaya, Takao Ookubo, Takahide Matsutsuka |
| 1997 | COMPSAC | Model-Based Architecture for the Intranet. | Hirotaka Hara, Takahide Matsutsuka, Nobuyuki Kanaya, Takao Ookubo, Sanya Uehara |
| 1994 | AAAI | Improving Repair-Based Constraint Satisfaction Methods by Value Propagation. | Nobuhiro Yugami, Yuiko Ohta, Hirotaka Hara |
| 1992 | ECAI | Solving the Large-Scale 0-1 Integer Programming Problem Using an Assumption-Based Method. | Hirotaka Hara |