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IEEE Transactions on Automation Science and Engineering > 2011 > 8 > 2 > 420 - 423
IEEE Transactions on Systems, Man, and Cybernetics, Part B (Cybernetics) > 2009 > 39 > 3 > 788 - 799
IEEE Transactions on Industrial Electronics > 2009 > 56 > 9 > 3593 - 3601