The mobile radio propagation channel / John David Parsons
Computer communications : architectures, protocols, and standards / ed. by William Stallings
Masts, antennas and service planning / G. W. Wiskin; R. G. Manton; J. H. Causebrook
Television engineering handbook : featuring HDTV systems / editor in chief K. Blair Benson
Telecomunicações / Juarez do Nascimento