Yildirim, Hasan Hüseyin, Cevriye Yüksel Yildirim, and Ömer Faruk Rençber. 2026. “Banking, Efficiency, Data Envelopment Analysis, Borsa Istanbul”. Global Advances in Business Studies 5 (1), 31-39. https://doi.org/10.55584/Gabs.005.01.3.