Li Liu Hao Li Junling Wang Lian Li Caihong Li Heuristics for Mobile Object Tracking Problem in Wireless Sensor Networks. 251-260 2009 FAW http://dx.doi.org/10.1007/978-3-642-02270-8_26 conf/faw/2009 db/conf/faw/faw2009.html#LiuLWLL09