@conference {AP2000_b,
	title = {Radio coverage study of airports using {GTD/UTD} techniques},
	booktitle = {AP2000 Millennium Conference on Antennas and Propagation},
	year = {2000},
	month = {April},
	address = {Davos, Switzerland},
	author = {Guti{\'e}rrez, O. and Gonz{\'a}lez, I. and Saez de Adana, F. and P{\'e}rez, Jes{\'u}s and C{\'a}tedra, M. F.}
}
