Conceptual Modeling for New Information Systems Technologies ER 2001 Workshops, HUMACS, DASWIS, ECOMO, and DAMA, Yokohama Japan, November 27-30, 2001. Revised Papers - Arisawa, Hiroshi; Arisawa, Hiroshi; Kambayashi, Yahiko; Kambayashi, Yahiko (Springer Berlin Heidelberg : Imprint: Springer, 2002)