Group Activity Database for Groupware Evolution. - Hiroyuki Tarumi; Tetsuya Matsuyama; Yahiko Kambayashi (ER Workshops, 1998)

Evolution of Business Processes and a Process Simulation Tool. - Hiroyuki Tarumi; Tetsuya Matsuyama; Yahiko Kambayashi (APSEC, 1999)

Simulation of Agent-Based Groupware with Human Factors. - Hiroyuki Tarumi; Satoshi Mizutani; Tetsuya Matsuyama; Yahiko Kambayashi (DANTE, 1999)