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Journal of Purchasing and Supply Management > 2011 > 17 > 1 > 23-31
IEEE Transactions on Systems, Man, and Cybernetics, Part C (Applications... > 2010 > 40 > 2 > 201 - 215
Journal of Purchasing and Supply Management > 2011 > 17 > 1 > 23-31
IEEE Transactions on Systems, Man, and Cybernetics, Part C (Applications... > 2010 > 40 > 2 > 201 - 215