Measuring the Efficiency of Islamic Financing Modes Using Data Envelopment Analysis: Evidence from Al Salam Bank, Adrar (2020–2023). JEA [Internet]. 2025 Sep. 30 [cited 2026 Apr. 5];9(2):704-25. Available from: https://journals.univ-ghardaia.edu.dz/idafat/article/view/1868