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IEEE Transactions on Information Theory > 2011 > 57 > 1 > 234 - 244
IEEE Communications Letters > 2009 > 13 > 9 > 643 - 645
IEEE Transactions on Communications > 2009 > 57 > 2 > 319 - 326
IEEE Transactions on Information Theory > 2008 > 54 > 10 > 4548 - 4564