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Research in Logistics & Production > 2014 > Vol. 4, No. 1 > 55--66
European Journal of Operational Research > 2009 > 197 > 2 > 731-740
Research in Logistics & Production > 2014 > Vol. 4, No. 1 > 55--66
European Journal of Operational Research > 2009 > 197 > 2 > 731-740