Telecommunications and IT Convergence. Towards Service E-volution 7th International Conference on Intelligence in Services and Networks, IS&N 2000, Athens, Greece, February 23-25, 2000 Proceedings - Delgado, Jaime; Delgado, Jaime; Stamoulis, George D.; Stamoulis, George D.; Mullery, Al; Mullery, Al; Prevedourou, Didoe; Prevedourou, Didoe; Start, Keith; Start, Keith (Springer Berlin Heidelberg : Imprint: Springer, 2000)