Telecomunicaciones y audiovisual informe económico sectorial [documento electrónico] : 2022 / Comisión Nacional de los Mercados y la Competencia
ERGP report on the future needs of the USO [documento eletrónico] / European Regulators Group for Postal Services
O sector das comunicações 2022 [documento eletrónico] / Autoridade Nacional de Comunicações
International communications within the EU [documento eletrónico] / European Commission
Report on comparison tools and accreditation [documento eletrónico] / Body of European Regulators for Electronic Communications
Measuring digital development [documento eletrónico] : facts and figures; : focus on least developed countries / International Telecommunication Union