Jörn Altmann Dirk Neumann Thomas Fahringer Grid Economics and Business Models, 5th International Workshop, GECON 2008, Las Palmas de Gran Canaria, Spain, August 26, 2008. Proceedings 5206 2008 978-3-540-85484-5 GECON Lecture Notes in Computer Science Springer db/conf/gecon/gecon2008.html