Annual report 2021 [documento eletrónico] / National Authority for Management and Regulation in Communications of Romania
Annual report 2021 [documento electrónico] / Communications Regulatory Authority of the Republic of Lithuania
Annual report 2021 [documento electrónico] / Cyprus Telecommunications Authority
Telecomunicaciones y audiovisual informe económico sectorial [documento electrónico] : 2021 / Comisión Nacional de los Mercados y la Competencia