Broadband Internet access cost (BIAC) [documento electrónico] : first half of 2008 prices as at 1-15 April 2008: final report / ed. Van Dijk-Management Consultants
Telecom operators : facing off on convergence / Arthur D. Little, Exane BNP Paribas
Relatório de supervisão comportamental 2009 / Banco de Portugal
Relatório de supervisão comportamental 2010 / Banco de Portugal