Satellites and fibre optics : Competition and complementary / Organisation for economic co-operation and developement
International directory of Telecommunications : market trends, companies, statistics, and personnel / Steven Roberts; Tony Hay
New Systems and Services in Telecommunications, III : proceedings of the third international conference on New Systems and Services in Telecommunications Liège, Belgium, November 12-14, 1986
Le communicateur : dossier nº 25: Telecoms et amenagement / F. Asselineau, [et all]; dir. Françoise Berthelat