Abdelfattah, Walid, and Mohammed Sadok Cherif. “Incorporation of Preferences into Supply Chains DEA Efficiency: A Geometric Attribution Approach”. Pakistan Journal of Statistics and Operation Research 16, no. 4 (December 2, 2020): 761-774. Accessed January 18, 2025. https://pjsor.com/pjsor/article/view/2578.