The european media industry : fragmentation and convergence in broadcasting and publishing / Cathy Stewart, Julian Laird
Um projecto português de telecomunicações : as 10 questões fundamentais / Luís Todo Bom
Cellular market report (274) : Portugal / ed. EMC
Opportunities in european voice telephony to 1988 and beyond / Robin Arnfield
The market for international callback services / Cathy Clarke
Multimedia in telecoms / Simon Norris; Susan Ablett