Yafeng Wu John A. Stankovic Tian He Shan Lin Realistic and Efficient Multi-Channel Communications in Wireless Sensor Networks. 1193-1201 2008 INFOCOM http://dx.doi.org/10.1109/INFOCOM.2008.175 conf/infocom/2008 db/conf/infocom/infocom2008.html#WuSHL08