"Measuring Efficiency of Health Systems in the Eastern Mediterranean Region During COVID-19 Using Data Envelopment Analysis Method (DEA)", renaf, م 19, عدد 31, ص 179–188, يوليو 2025, تاريخ الوصول: أكتوبر 23, 2026. موجود في: https://journals.univ-chlef.dz/index.php/renaf/article/view/477