John Darzentas, George A. Vouros, Spyros Vosinakis, Argyris Arnellos: Artificial Intelligence: Theories, Models and Applications, 5th Hellenic Conference on AI, SETN 2008, Syros, Greece, October 2-4, 2008. Proceedings. Lecture Notes in Computer Science 5138, Springer 2008, ISBN 978-3-540-87880-3