.Network economics for next generation networks : 6th International Workshop on Internet Charging and QoS Technologies, ICQT 2009, Aachen, Germany, May 11-15, 2009 : proceedings /.,.
Network economics for next generation networks : 6th International Workshop on Internet Charging and QoS Technologies, ICQT 2009, Aachen, Germany, May 11-15, 2009 : proceedings /