Ting Sun Dongxin Lu Yongtian Yang An Energy-Efficient Routing Method of Wireless Sensor Networks. 129-132 2007 conf/iccS/2007-3 International Conference on Computational Science (3) http://dx.doi.org/10.1007/978-3-540-72588-6_20 db/conf/iccS/iccS2007-3.html#SunLY07