Para além da aldeia global : a era das comunicações transcontinentais / Arthur C. Clarke; trad. de Maria da Graça Pinhão
Basic television and video systems / Bernard Grob
Notes on telegraphy : a simple exposition of the rudiments of technical telegraphy and telephony / A. G. Pratt, G. Mogg
Telecommunications : economics and regulation / James M. Herring, Gerald C. Gross