BEREC guidance on the regulatory accounting approach to the economic replicability test [documento eletrónico] : (i.e. ex-ante/sector specific margin squeeze tests) / Body of European Regulators for Electronic Communications
História das Comunicações em Portugal : guia de fontes documentais / ed. Fundação Portuguesa das Comunicações
The technology guide to telecommunications / John Horrocks and Robin Scarr
WRTH satellite broadcasting guide
Understanding accessibility : a guide to achieving compliance on web sites and intranets / Robert B. Yonaitis
O guia prático das redes sem fios / António Eduardo Marques
2004 Shortwave frequency guide : worldwide broadcast and utility radio stations
2004 Guide utility radio stations : worldwide HF communication today
The essential guide to digital set-top boxes and interactive TV / Gerard O'Driscoll
A guide to cellular radio / OFTEL
Electrical installations handbook : power supply and distribution, protective measures, electromagnetic compatibility, electrical installation equipment and systems, application examples for electrical installation systems, building management / ed. Gunter G. Seip