https://www.paldf.net/forum/showthread.php?t=869751
http://scholar.najah.edu/ar/theses
http://library.iugaza.edu.ps/thesis.aspx
http://www.ao-academy.org/periodics.html
http://sonofalgeria.blogspot.com/search/label/%D9%83%D8%AA%D8%A8%20%D8%B9%D9%84%D9%85%20%D8%A7%D9%84%D9%86%D9%81%D8%B3%20%D9%88%D8%A7%D9%84%D8%A5%D8%AC%D8%AA%D9%85%D8%A7%D8%B9
