Youssef Iraqi Raouf Boutaba Is It Worth Involving Several Cooperating Agents for Multimedia User's Admission in Cellular Networks? 57-70 2001 conf/mmns/2001 MMNS http://link.springer.de/link/service/series/0558/bibs/2216/22160057.htm db/conf/mmns/mmns2001.html#IraqiB01