Coordination, Organizations, Institutions and Norms in Agent Systems IV : COIN 2008 International Workshops COIN@AAMAS 2008, Estoril, Portugal, May 12, 2008 COIN@AAAI 2008, Chicago, USA, July 14, 2008, Revised Selected Papers - Jomi Fred Hübner, Eric Matson, Olivier Boissier, Virginia Dignum ((Lecture Notes in Computer Science))