Portugal (Country regulation overview) [documento electronico] / Marcela Perez Sirio
O impacto da crise financeira [documento electrónico] : mercado das TIC - Portugal vs Europa: análise e previsões, 2008-2012 / Orlando Bandeira de Almeida e Gabriel Coimbra
OECD Communications outlook 2009 [documento electrónico] / Organisation for Economic co-Operation and Development
Measuring the information society [documento electrónico] : the ICT development index / International Telecommunication Union
Report on the telecommunications market in 2008 [documento electrónico] : (update) / Office of Electronic Communications