Object-oriented and internet-based technologies [electronic resource] : 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 - Liggesmeyer, Peter; Weske, Mathias , 1963- (Lecture notes in computer science, 2004)