Makoto Sano, David A. Evans. Circumstance-based categorization analysis of knowledge management systems for the japanese market. In David A. Grossman, Luis Gravano, ChengXiang Zhai, Otthein Herzog, David A. Evans, editors, Proceedings of the 2004 ACM CIKM International Conference on Information and Knowledge Management, Washington, DC, USA, November 8-13, 2004. pages 507-514, ACM, 2004. [doi]