IEEE Communications Letters
IEEE Communications Letters > 2012 > 16 > 3 > 389 - 391
IEEE Communications Letters > 2012 > 16 > 9 > 1504 - 1507
IEEE Communications Letters > 2012 > 16 > 3 > 389 - 391
IEEE Communications Letters > 2012 > 16 > 9 > 1504 - 1507