Mihaela Cardei Shuhui Yang Jie Wu 0001 Fault-Tolerant Topology Control for Heterogeneous Wireless Sensor Networks. 1-9 2007 MASS http://dx.doi.org/10.1109/MOBHOC.2007.4428594 conf/mass/2007 db/conf/mass/mass2007.html#CardeiYW07