Bevan Das Raghupathy Sivakumar Vaduvur Bharghavan Routing in Ad Hoc Networks Using a Spine. 34-41 1997 conf/icccn/1997 ICCCN http://doi.ieeecomputersociety.org/10.1109/ICCCN.1997.623288 db/conf/icccn/icccn1997.html#DasSB97