European Information Technology Observatory 2003 / European Information Technology Observatory (EITO)
DigiWorld 2003 [documento electrónico] : the european way to think the digital world / ed. IDATE
Worldwide telecommunications fixed public network services guide / ed. Gartner Group
Global digital TV : management report / Adam Thomas, Chris Groner, Simon Dyson
Anuário de media e publicidade 2002 [texto policopiado] / ed. Marktest
OECD Communications outlook 2003 / Organisation for Economic co-Operation and Development
Statistics on the information society in Europe / European Commission
Communications markets analysis / ed. Espicom