Dongmin Choi Sangman Moh Ilyong Chung Variable Area Routing Protocol in WSNs: A Hybrid, Energy-Efficient Approach. 397-403 2008 HPCC http://dx.doi.org/10.1109/HPCC.2008.97 conf/hpcc/2008 db/conf/hpcc/hpcc2008.html#ChoiMC08