Coordination, Organizations, Institutions, and Norms in Agent Systems II : AAMAS 2006 and ECAI 2006 International Workshops, COIN 2006 Hakodate, Japan, May 9, 2006 Riva del Garda, Italy, August 28, 2006, Revised Selected Papers - Pablo Noriega, Javier Vázquez-Salceda, Guido Boella, Olivier Boissier, Virginia Dignum, Nicoletta Fornara, Eric Matson ((Lecture Notes in Computer Science))