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IEEE Transactions on Information Theory > 2010 > 56 > 8 > 3793 - 3806
IEEE Communications Magazine > 2009 > 47 > 8 > 71 - 77
IEEE Transactions on Signal Processing > 2008 > 56 > 7-1 > 2957 - 2966
IEEE Transactions on Information Theory > 2007 > 53 > 10 > 3596 - 3614