Systems Analysis for Collaborative System by Use Case Diagram. - Ryo Kawabata; Toshiharu Kasahara; Kiyoshi Itoh (Trans. SDPS, 2007)

The Description and Retrieval of Diagrams Based on Case Grammar. - Ryo Kawabata; Toshiharu Kasahara; Kiyoshi Itoh (Trans. SDPS, 2008)