Lynn Choi Kwangseok Choi Jungsun Kim Byung Joon Park Virtual Sink Rotation: Low-Energy Scalable Routing Protocol for Ubiquitous Sensor Networks. 1128-1137 2005 conf/euc/2005w EUC Workshops http://dx.doi.org/10.1007/11596042_115 db/conf/euc/eucw2005.html#ChoiCKP05