Group communications and charges : technology and business models : 5th COST 264 international workshop on networked group communications, NGC 2003 and 3rd international workshop on internet charging and QoS technologies, ICQT 2003 : Munich, Germany, September 16-19, 2003, proceedings. : Sep 2003, Munich, Germany. (Lecture Notes in Computer Science ; 2816)
Group communications and charges : technology and business models : 5th COST 264 international workshop on networked group communications, NGC 2003 and 3rd international workshop on internet charging and QoS technologies, ICQT 2003 : Munich, Germany, September 16-19, 2003, proceedings. : Sep 2003, Munich, Germany.