ER02 - Session 2: Principles of Ontology Finding and Characterizing Changes in Ontologies Michel C. A. Klein Atanas Kiryakov Damyan Ognyanov Dieter Fensel Superimposed Schematics: Introducing E-R Structure for In-Situ Information Selections Shawn Bowers Lois M. L. Delcambre David Maier On the General Ontological Foundations of Conceptual Modeling Giancarlo Guizzardi Heinrich Herre Gerd Wagner Return to ER02 session listing ©2004 Association for Computing Machinery