IEEE Communications Letters
IEEE Communications Letters > 2008 > 12 > 4 > 280 - 282
IEEE Communications Letters > 2008 > 12 > 8 > 557 - 559
IEEE Communications Letters > 2008 > 12 > 9 > 654 - 656
IEEE Communications Letters > 2008 > 12 > 9 > 675 - 677
IEEE Communications Letters > 2008 > 12 > 10 > 749 - 751