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IEEE Signal Processing Letters > 2009 > 16 > 11 > 937 - 940
IEEE Transactions on Signal Processing > 2009 > 57 > 10 > 3815 - 3826
IEEE Transactions on Signal Processing > 2008 > 56 > 8-1 > 3702 - 3712
IEEE Transactions on Signal Processing > 2008 > 56 > 8-1 > 3482 - 3496