Dorin Panaitopol Peng Yong Kong Chen-Khong Tham Jocelyn Fiorina An efficient cooperative transmission scheme using multiple relays incrementally. 1122-1127 2010 PIMRC http://dx.doi.org/10.1109/PIMRC.2010.5672064 conf/pimrc/2010 db/conf/pimrc/pimrc2010.html#PanaitopolKTF10