Federico Cabitza Marco P. Locatelli Marcello Sarini CASMAS: An Agent-Based Support for Modulated Participation in Cooperative Applications. 111-119 2005 conf/woa/2005 WOA http://lia.deis.unibo.it/books/woa2005/papers/16.pdf db/conf/woa/woa2005.html#CabitzaLS05