Reuven Cohen Liran Katzir Romeo Rizzi On the Trade-Off between Energy and Multicast Efficiency in 802.16e-Like Mobile Networks. 346-357 2008 7 IEEE Trans. Mob. Comput. 3 http://doi.ieeecomputersociety.org/10.1109/TMC.2007.70729 db/journals/tmc/tmc7.html#CohenKR08