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European Journal of Operational Research > 2016 > 253 > 1 > 154-169
European Journal of Operational Research > 2016 > 253 > 1 > 121-131
European Journal of Operational Research > 2016 > 253 > 1 > 154-169
European Journal of Operational Research > 2016 > 253 > 1 > 121-131