https://uomosul.edu.iq/computerscience/%d9%82%d8%a7%d9%85-%d8%a7%d9%84%d8%a7%d8%b3%d8%aa%d8%a7%d8%b0-%d8%a7%d9%84%d8%af%d9%83%d8%aa%d9%88%d8%b1-%d9%86%d8%b2%d8%a7%d8%b1-%d8%ad%d9%85%d8%af%d9%88%d9%86-%d8%b4%d9%83%d8%b1-%d8%b9%d9%85%d9%8a-6/