Salim AL-Kutubi, Hadeel, and Faris Abd Yaseen. “Statistical Analysis on Student in Department of Mathematics (2007-2008)”. University of Thi-Qar Journal of Science, vol. 1, no. 3, Jan. 2009, pp. 40-56, http://mail.jsci.utq.edu.iq/index.php/main/article/view/186.