Roaming performance study [documento eletrónico] : an assessment of technical performance of mobile networks for roaming in the EU / Pravir Chawdhry...[et al.]
Connectivity & beyond [documento eletrónico] : how telcos can accelerate a digital future for all / European Telecommunications Network Operators' Association
Statista - only user [Recursos eletrónicos] / Statista Inc.
Estudo de fidelização e pacotização [documento eletrónico] / ed. Marktest
Portugal telecommunications report [documento eletrónico] : includes 10-year forecasts to 2030 / Fitch Solutions
Cooperation between telecommunications operators for infrastructure deployment [documento eletrónico] / Marc Bourreau