IEEE Communications Letters
IEEE Communications Letters > 2012 > 16 > 4 > 490 - 493
IEEE Communications Letters > 2012 > 16 > 9 > 1341 - 1344
IEEE Communications Letters > 2012 > 16 > 4 > 490 - 493
IEEE Communications Letters > 2012 > 16 > 9 > 1341 - 1344