José Cordeiro Joaquim Filipe Slimane Hammoudi WEBIST 2008, Proceedings of the Fourth International Conference on Web Information Systems and Technologies, Volume 2, Funchal, Madeira, Portugal, May 4-7, 2008 978-989-8111-27-2 INSTICC Press WEBIST (2) 2008 db/conf/webist/webist2008-2.html