国際会議
[1] Masao Ohira, Kiwako Koyama, Akinori Ihara, Shinsuke Matsumoto, Yasutaka Kamei, and Ken-ichi Matsumoto, "A Time-Lag Analysis Toward Improving the Efficiency of Communications among Oss Developers," In Proceedings of The 3rd International Workshop on Knowledge Collaboration in Software Development (KCSD2009), pages 49--62, November 2009.
[2] Takeshi Kakimoto, Yasutaka Kamei, Masao Ohira, and Ken-ichi Matsumoto, "Social Network Analysis on Communications for Knowledge Collaboration in Oss Communities," In Proceedings of the 2nd International Workshop on Supporting Knowledge Collaboration in Software Development (KCSD2006), pages 35--41, September 2006.