Alexander Artikis Gregory M. P. O'Hare Kostas Stathis George A. Vouros Engineering Societies in the Agents World VIII, 8th International Workshop, ESAW 2007, Athens, Greece, October 22-24, 2007, Revised Selected Papers 4995 2008 978-3-540-87653-3 ESAW Lecture Notes in Computer Science Springer db/conf/esaw/esaw2007.html