Chenyang Lu Guoliang Xing Octav Chipara Chien-Liang Fok Sangeeta Bhattacharya A Spatiotemporal Query Service for Mobile Users in Sensor Networks. 381-390 2005 conf/icdcs/2005 ICDCS http://doi.ieeecomputersociety.org/10.1109/ICDCS.2005.7 db/conf/icdcs/icdcs2005.html#LuXCFB05