Premium voice services in 2004 [documento electrónico] / Angel Dobardziev
Assessing the impact of MVNOs in Europe [documento electrónico] / Chris Farmer, Carrie Pawsey
The 4G report 2005 : changing the wireless value chain / [ed.]Visiongain
Mobile TV : market analysis and forecast 2004-2009 / [ed.] Visiongain