https://uomosul.edu.iq/petroleumengineering/%d8%aa%d8%b9%d8%b7%d9%8a%d9%84-%d8%a7%d9%84%d8%af%d9%88%d8%a7%d9%85-%d8%a7%d9%84%d8%b1%d8%b3%d9%85%d9%8a-%d9%84%d9%8a%d9%88%d9%85-%d8%ba%d8%af-%d8%a7%d9%84%d8%a7%d8%ad%d8%af-17-3-2019/