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IEEE Transactions on Knowledge and Data Engineering > 2011 > 23 > 5 > 669 - 682
IEEE Transactions on Information Forensics and Security > 2011 > 6 > 1 > 189 - 201
Computing in Science & Engineering > 2011 > 13 > 2 > 64 - 69
IEEE Transactions on Systems, Man, and Cybernetics, Part C (Applications... > 2011 > 41 > 1 > 130 - 139