Khelassi Abdel-illah, Rezgui Nour Elhouda, and Besir Lutfi. “Measuring Efficiency of Health Systems in the Eastern Mediterranean Region During COVID-19 Using Data Envelopment Analysis Method (DEA)”. Journal of North African Economies 19, no. 31 (July 3, 2025): 179–188. Accessed July 9, 2025. https://journals.univ-chlef.dz/index.php/renaf/article/view/477.