عبد الهادي الرفاعي, and هلا محمد نتيفة. 2023. “Using Normal Log Distribution in Building Life Table in Syria for Period (1998-2019)”. Tishreen University Journal- Economic and Legal Sciences Series 45 (2):185-203. https://journal.tishreen.edu.sy/index.php/econlaw/article/view/15136.