Hari Rangarajan J. J. Garcia-Luna-Aceves Reliable data delivery in event-driven wireless sensor networks. 232-237 2004 conf/iscc/2004 ISCC http://doi.ieeecomputersociety.org/10.1109/ISCC.2004.1358410 db/conf/iscc/iscc2004.html#RangarajanG04a