World radio TV handbook 2004 : the directory of global broadcasting
The Communications market 2004 [documento electrónico] / Office of Communications
Television over mobile devices [documento electrónico] : new stakes of a revolution of usages / François Chemin... [et al.]
Anuário comunicação / Obercom Observatório da Comunicação
Barómetro da comunicação / Obercom Observatório da Comunicação; dir. Luís Landerset Cardoso
CISPR 20 [documento electrónico] : amendement 2; : récepteurs de radiodiffusion et de télévision et équipments associés; : caractéristiques d'immunité; : limites et méthodes de mesure / Commission Electrotechnique Internationale
TR CISPR 29 [documento eletrónico] : television broadcast receivers and associated equipment – immunity characteristics – methods of objective picture assessment / International Electrotechnical Commission