IEEE Communications Magazine
IEEE Communications Magazine > 2007 > 45 > 11 > 116 - 122
IEEE Communications Magazine > 2008 > 46 > 2 > 140 - 146
IEEE Communications Magazine > 2009 > 47 > 11 > 112 - 118
IEEE Communications Magazine > 2010 > 48 > 11 > 156 - 163
IEEE Communications Magazine > 2013 > 51 > 4 > 168 - 176