Raghul Gunasekaran Hairong Qi XLRP: Cross Layer Routing Protocol for Wireless Sensor Networks. 2135-2140 2008 WCNC http://dx.doi.org/10.1109/WCNC.2008.378 conf/wcnc/2008 db/conf/wcnc/wcnc2008.html#GunasekaranQ08