Erturan MB, Merdivenci F. LPI Based Two Stage Network DEA Model to Measure Logistics Efficiency: An Application on OECD Countries. ISARDER [Internet]. 2021 Jun. 30 [cited 2024 Jul. 17];13(2):1187-99. Available from: https://isarder.org/index.php/isarder/article/view/1445