Conceptual Modeling - ER 2006 25th International Conference on Conceptual Modeling, Tucson, AZ, USA, November 6-9, 2006, Proceedings Embley David W. Heftet / 2006 / Engelsk
Conceptual Modeling - ER 2008 27th International Conference on Conceptual Modeling, Barcelona, Spain, October 20-24, 2008, Proceedings Li, Qing Heftet / 2008 / Engelsk
Advanced Conceptual Modeling Techniques ER 2002 Workshops - ECDM, MobIMod, IWCMQ, and eCOMO, Tampere, Finland, October 7-11, 2002, Proceedings Olivé, Antoni Heftet / 2003 / Engelsk
