Mohammad Hossein Yeganeh Hamed Yousefi Naser Alinaghipour Ali Movaghar RDAG: A Structure-Free Real-Time Data Aggregation Protocol for Wireless Sensor Networks. 51-60 2011 RTCSA (1) http://doi.ieeecomputersociety.org/10.1109/RTCSA.2011.70 conf/rtcsa/2011-1 db/conf/rtcsa/rtcsa2011-1.html#YeganehYAM11