A casa do futuro interactiva / ed. Fundação Portuguesa das Comunicações
Telecommunications regulation handbook / Hank Intven, Jeremy Oliver, Edgardo Sepúlveda
Regulating SPAM : Directive 2002/58 and beyond / Lodewijk F. Asscher; Judith van Erve
Capital spending by top mobile operators in Europe / Carlo Cosimo Giuseppe Garofano and Sarah Randall