Ouertani, Mohamed Nejib, Hanen Hamdani, and Mohamed Sharif Bashir. 2020. “Estimating Islamic banks’ Technical and Allocative Inefficiencies: A Shadow Cost Approach”. The Journal of Muamalat and Islamic Finance Research 17 (1):14-32. https://doi.org/10.33102/jmifr.v17i1.257.