Bogdan Carbunar Yang Yu Weidong Shi Michael Pearce Venu Vasudevan Query privacy in wireless sensor networks. 203-212 2007 SECON http://dx.doi.org/10.1109/SAHCN.2007.4292832 conf/secon/2007 db/conf/secon/secon2007.html#CarbunarYSPV07