My T. Thai Feng Wang 0002 David Hongwei Du Xiaohua Jia Coverage problems in wireless sensor networks: designs and analysis. 191-200 2008 3 IJSNET 3 http://www.inderscience.com/search/index.php?action=record&rec_id=18482&prevQuery=&ps=10&m=or db/journals/ijsnet/ijsnet3.html#ThaiWDJ08