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IEEE Intelligent Systems > 2014 > 29 > 4 > 102 - 104
IEEE Transactions on Engineering Management > 2010 > 57 > 4 > 575 - 588
IEEE Intelligent Systems > 2014 > 29 > 4 > 102 - 104
IEEE Transactions on Engineering Management > 2010 > 57 > 4 > 575 - 588