1994 PN series : propagation in non-ionized media: ITU-R recommendations / ITU-R
1994 PI series : propagation in ionized media: ITU-R recommendations / ITU-R
Antennas and propagation : ninth international conference: 4-7 April 1995 / org. by the Electronics Division of the Institution of Electrical Engineers and the Technical University of Eindhoven
Radiowave propagation and antennas for personal communications / Kazimierz Siwiak