IEEE Communications Magazine
IEEE Communications Magazine > 2008 > 46 > 7 > 136 - 145
IEEE Communications Magazine > 2009 > 47 > 1 > 62 - 69
IEEE Communications Magazine > 2009 > 47 > 8 > 58 - 68
IEEE Communications Magazine > 2011 > 49 > 2 > s16 - s24