Asimakis Tzamaloukas J. J. Garcia-Luna-Aceves A Receiver-Initiated Collision-Avoidance Protocol for Multi-Channel Networks. 189-198 2001 INFOCOM http://www.ieee-infocom.org/2001/paper/604.ps db/conf/infocom/infocom2001-1.html#TzamaloukasG01