Ambient Intelligence: Second European Symposium, EUSAI 2004, Eindhoven, The Netherlands, November 8-11, 2004. Proceedings Panos Markopoulos Berry Eggen Emile H. L. Aarts James L. Crowley 3-540-23721-6 3295 2004 EUSAI Lecture Notes in Computer Science Springer db/conf/eusai/eusai2004.html