Sungil Kim Yoo Chul Chung Yangwoo Ko Dongman Lee A Reactive Local Positioning System for Ad Hoc Networks. 44-51 2008 SUTC http://doi.ieeecomputersociety.org/10.1109/SUTC.2008.22 conf/sutc/2008 db/conf/sutc/sutc2008.html#KimCKL08