The mobile economy Europe 2021 [documento eletrónico] / ed. GSMA
Os submercados da atenção [documento eletrónico] : dinâmicas de acesso a notícias online / coord. Gustavo Cardoso e Vânia Baldi
BEREC report to enable comparable national broadband coverage indicators throughout Europe [documento eletrónico] / Body of European Regulators for Electronic Communications