Cooperative Information Systems 7th International Conference, CoopIS 2000 Eilat, Israel, September 6-8, 2000 Proceedings Etzion Opher Heftet / 2000 / Engelsk
Conceptual Modeling -- ER 2003 22nd International Conference on Conceptual Modeling, Chicago, IL, USA, October 13-16, 2003, Proceedings Song Il-Yeol Heftet / 2003 / Engelsk
Developing an Infrastructure for Mobile and Wireless Systems NSF Workshop IMWS 2001, Scottsdale, AZ, October 15, 2001, Revised Papers König-Ries, Birgitta Heftet / 2002 / Engelsk
