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IEEE Signal Processing Letters > 2009 > 16 > 11 > 937 - 940
IEEE Transactions on Signal Processing > 2008 > 56 > 8-1 > 3613 - 3626
IEEE Transactions on Signal Processing > 2008 > 56 > 8-1 > 3497 - 3509
IEEE Transactions on Signal Processing > 2008 > 56 > 8-2 > 3846 - 3854