IEEE Communications Magazine
IEEE Communications Magazine > 2008 > 46 > 11 > 119 - 125
IEEE Communications Magazine > 2009 > 47 > 11 > 104 - 110
IEEE Communications Magazine > 2010 > 48 > 5 > 138 - 146
IEEE Communications Magazine > 2015 > 53 > 12 > 72 - 79
IEEE Communications Magazine > 2015 > 53 > 12 > 64 - 70