"Measuring Efficiency of Health Systems in the Eastern Mediterranean Region During COVID-19 Using Data Envelopment Analysis Method (DEA)" (2025) مجلة اقتصاديات شمال افريقيا, 19(31), ص 179–188. موجود في: https://journals.univ-chlef.dz/index.php/renaf/article/view/477 (تاريخ الوصول: 24 أكتوبر 2026).