International roaming [documento electrónico] : ERG benchmark data report for April to September 2007 / European Regulators Group
European innovation scoreboard 2007 [documento electrónico] : comparative analysis of innovation performance / European Commission
The future of Internet [documento electrónico] : a compendium of european projects on ICT Research supported by the EU 7th framework programme for RTD / European Commission
Internet usage in 2008 [documento electrónico] : households and individuals / Anna Lööf