Efficient MAC Protocols for Wireless Sensor Networks Endowed with Directive Antennas: A Cross-Layer Solution.
Gianfranco ManesRomano FantacciFrancesco ChitiMichele CiabattiGiovanni CollodiDavide Di PalmaIlaria NelliAntonio ManesPublished in: EURASIP J. Wirel. Commun. Netw. (2007)