
1.		The media in the network society : browsing, news, filters and citizenship / Gustavo Cardoso; pref. Manuel Castells Autor: CARDOSO, Gustavo Leitão, 1969- Data Publicação: 2006 Tema: Comunicações Eletrónicas
2.		EN 50400 [documento electrónico] : basic standard to demonstrate the compliance of fixed equipment for radio transmission (110 MHz - 40 GHz) intended for use in wireless telecommunication networks with the basic restrictions or the reference levels related to general public exposure to radio frequency electromagnetic fields, when put into service / European Committee for Electrotechnical Standardization Data Publicação: 2006 Tema: Normas
3.		EN 50401 [documento electrónico] : product standard to demonstrate the compliance of fixed equipment for radio transmission (110 MHz - 40 GHz) intended for use in wireless telecommunication networks with the basic restrictions or the reference levels related to general public exposure to radio frequency electromagnetic fields, when put into service / European Committee for Electrotechnical Standardization Data Publicação: 2006 Tema: Normas
4.		EN 50420 [documento electrónico] : basic standard for the evaluation of human exposure to electromagnetic fields from a stand alone broadcast transmitter (30 MHz - 40 GHz / European Committee for Electrotechnical Standardization Data Publicação: 2006 Tema: Normas
5.		EN 50421 [documento electrónico] : product standard to demonstrate the compliance of stand alone broadcast transmitters with the reference levels or the basic restrictions related to public human exposure to radio frequency electromagnetic fields (30 MHz - 40 GHz) / European Committee for Electrotechnical Standardization Data Publicação: 2006 Tema: Normas