Building Workflow for Collaboration Task using Muti-Context Map. - Satoshi Kumagai; Akiko Hasegawa; Ryo Kawabata; Kiyoshi Itoh (Trans. SDPS, 2000)

Extracting E-R Models from Collaboration Analysis Methods, MCM, and CLM. - Manabu Kamimura; Naoyuki Kato; Ryo Kawabata; Satoshi Kumagai; Kiyoshi Itoh (ER (Workshops), 2001)

Multi-Strata Modeling in MCM and CLM for Collaborative Engineering. - Kiyoshi Itoh; Ryo Kawabata; Akiko Hasegawa; Satoshi Kumagai (DIISM, 2002)

Integrated Diagrammatic Representations for Data Design in Collaborative Processes. - Manabu Kamimura; Kiyofumi Inoue; Akiko Hasegawa; Ryo Kawabata; Satoshi Kumagai; Kiyoshi Itoh (Trans. SDPS, 2003)

Effective Analysis Method by Reusing MCM for Collaboration Task. - Ryo Kawabata; Akiko Hasegawa; Kiyoshi Itoh (Trans. SDPS, 2004)

Systems Analysis by Extended State Transitions Diagram Based on Lifecycle and Various Attributes of Object. - Sanae Sakurai; Ryo Kawabata; Kiyoshi Itoh; Naru Okubo (Trans. SDPS, 2004)

Computer-Mediated Collaborative Engineering System (Cmces) and its Applications to Education. - Tad Gonsalves; Ryo Kawabata; Kengo Nakagawa; Yuki Ishikawa; Kiyoshi Itoh (Trans. SDPS, 2005)

Evolutional Systems Analysis and its Tool by Effective Use of Chart Representations. - Ryo Kawabata; Yuji Senuma; Jun Maruyama; Kiyoshi Itoh (Trans. SDPS, 2005)

Diagrammatic Education for Software Engineering. - Ryo Kawabata; Kiyoshi Itoh (Trans. SDPS, 2006)

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

Swarm Intelligence in the Optimization of Software Development Project Schedule. - Tad Gonsalves; Atsushi Ito; Ryo Kawabata; Kiyoshi Itoh (COMPSAC, 2008)

Petri Net Tools for the Analysis of Collaborative Tasks. - Tad Gonsalves; Ryo Kawabata; Shunya Tabata; Kiyoshi Itoh (Trans. SDPS, 2008)

The Integrated Environment for Supporting Collaborative Analysis. - Ryo Kawabata; Yuki Ishikawa; Kenji Masuda; Kiyoshi Itoh (Trans. SDPS, 2008)

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

Optimizing Cost in Software Development Projects. - Tad Gonsalves; Ryo Kawabata; Kiyoshi Itoh (Trans. SDPS, 2009)

Extraction of Process Types and remarkable Steps on Behavior Based Diagrams. - Manabu Kamimura; Ryo Kawabata; Kiyoshi Itoh (Trans. SDPS, 2009)

Computer-Aided solid Geometry Learning (Casgl). - Ryo Kawabata; Kiyoshi Itoh (Trans. SDPS, 2009)

Extraction of Database Table Design by Transactions. - Manabu Kamimura; Ryo Kawabata; Kiyoshi Itoh (Trans. SDPS, 2010)

The Integrated Environment for Specifying and Reusing identical and Different Types of Systems Diagrams. - Ryo Kawabata; Tadashi Yagame; Kiyoshi Itoh (Trans. SDPS, 2010)