Yi Sun Jizhong Xiao Xiaohai Li Flavio Cabrera-Mora Adaptive Source Localization by a Mobile Robot Using Signal Power Gradient in Sensor Networks. 17-21 2008 GLOBECOM http://dx.doi.org/10.1109/GLOCOM.2008.ECP.12 conf/globecom/2008 db/conf/globecom/globecom2008.html#SunXLC08