@article {Ant_Prop_Magazine_1998,
	title = {Efficient Ray-Tracing Techniques for Three-Dimensional Analysis of Propagation in Mobile Communications: Appications to Picocell and Microcell Scenarios},
	journal = {IEEE Antennas and Propagation Magazine},
	volume = {40},
	number = {2},
	year = {1998},
	month = {April},
	pages = {15{\textendash}28},
	author = {C{\'a}tedra, M. F. and P{\'e}rez, Jes{\'u}s and Saez de Adana, F. and Guti{\'e}rrez, O.}
}
