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Proceedings of the IEEE > 2011 > 99 > 11 > 1980 - 1997
IEEE Communications Letters > 2010 > 14 > 11 > 1020 - 1022
IEEE Journal on Selected Areas in Communications > 2010 > 28 > 8 > 1326 - 1331
IEEE Communications Surveys & Tutorials > 2010 > 12 > 4 > 488 - 503