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Annals of Operations Research > 2015 > 235 > 1 > 709-739
European Journal of Operational Research > 2010 > 207 > 1 > 70-77
Annals of Operations Research > 2015 > 235 > 1 > 709-739
European Journal of Operational Research > 2010 > 207 > 1 > 70-77