Malik Ghallab Constantine D. Spyropoulos Nikos Fakotakis Nikolaos M. Avouris ECAI 2008 - 18th European Conference on Artificial Intelligence, Patras, Greece, July 21-25, 2008, Proceedings 178 Frontiers in Artificial Intelligence and Applications 2008 978-1-58603-891-5 IOS Press http://www.booksonline.iospress.nl/Content/View.aspx?piid=9905 ECAI db/conf/ecai/ecai2008.html