IEEE Communications Magazine
IEEE Communications Magazine > 2009 > 47 > 12 > 68 - 74
IEEE Communications Magazine > 2014 > 52 > 8 > 153 - 159
IEEE Communications Magazine > 2009 > 47 > 12 > 68 - 74
IEEE Communications Magazine > 2014 > 52 > 8 > 153 - 159