IEEE Communications Magazine
IEEE Communications Magazine > 2009 > 47 > 3 > 174 - 180
IEEE Communications Magazine > 2009 > 47 > 5 > 152 - 159
IEEE Communications Magazine > 2009 > 47 > 10 > 64 - 71
IEEE Communications Magazine > 2015 > 53 > 7 > 184 - 191