Object-Oriented and Internet-Based Technologies 5th Annual International Conference on Object-Oriented and Internet-Based Technologies, Concepts, and Applications for a Networked World, Net.ObjectDays 2004 Erfurt, Germany, September 27-30, 2004 Proceedings - Weske, Mathias; Weske, Mathias; Liggesmeyer, Peter; Liggesmeyer, Peter (Springer Berlin Heidelberg : Imprint: Springer, 2004)