Access pricing regulation [texto policopiado] / M. Carmo Seabra, António P. N. Leite, Diogo Lucena
Instrument insufficiency in access-pricing regulation [texto policopiado] / António Nogueira Leite, Vasco Santos, Maria do Carmo Seabra
Universal Service [texto policopiado] : does competition help or hurt? / Pedro P. Barros, M. Carmo Seabra