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2008 Congress on Image and Signal Processing > 3 > 801 - 805
2008 Congress on Image and Signal Processing > 1 > 31 - 34
IEEE Transactions on Signal Processing > 2008 > 56 > 8-1 > 3548 - 3561
1993 IEEE International Conference on Acoustics, Speech, and Signal Processing > 5 > 666 - 669 vol.5