1 REFERENCE MODELS FOR VIRTUAL ENTERPRISES Martin Telle, Peter Bernus, Johan Vesterager..................................................3 2 TOWARDS A MODELLING FRAMEWORK FOR NETWORKS OF SMEs F. Biennier, Xavier Boucher, Abdelkader Hammami, Lucien Vincent...............11 3 ENTERPRISE ENGINEERING THE BASIS FOR SUCCESSFUL PLANNING OF E-BUSINESS R.Jochem..............................................