فيصل جعفر حسن. اهم العقبات التي تواجه المخطط الاساس. Journal of Engineering and Sustainable Development, Baghdad, Iraq, v. 22, n. 5, p. Ar 1–10, 2018. Disponível em: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/392.. Acesso em: 5 jun. 2026.