Pricing broadband : a model for competitive advantage / Anne Hurley, David Rogerson
Numbering for telephony services into the 21st century : a report to OFTEL / by Ovum Ltd
Anuário 1997 / Ministério do Equipamento, do Planeamento e da Administração do Território
Anuário 2000/2001 / Ministério do Equipamento Social