Tamaghna Acharya Rajarshi Roy Samiran Chattopadhyay Energy-Efficient Broadcasting in Wireless Ad Hoc Networks Using Directional Antennas. 36-40 2008 VTC Spring http://dx.doi.org/10.1109/VETECS.2008.20 conf/vtc/2008s db/conf/vtc/vtc2008s.html#AcharyaRC08