International roaming [documento electrónico] : ERG benchmark data report for April to September 2007 / European Regulators Group
International roaming [documento electrónico] : ERG benchmark data report for October 2007 to March 2008 / European Regulators Group
International roaming [documento electrónico] : ERG benchmark data report for April 2008 to September 2008 / European Regulators Group
Report on Next Generation Access [documento electrónico] : Economic Analysis and Regulatory Principles / European Regulators Group