IEEE Communications Magazine
IEEE Communications Magazine > 2007 > 45 > 10 > 94 - 101
IEEE Communications Magazine > 2009 > 47 > 8 > 100 - 106
IEEE Communications Magazine > 2007 > 45 > 10 > 94 - 101
IEEE Communications Magazine > 2009 > 47 > 8 > 100 - 106