Abdul-Wahab, M., and A. Al-Kubaisy. “Study of the Factors Affecting Cells of Sodium Perchlorate Production”. Iraqi Journal of Chemical and Petroleum Engineering, Vol. 3, no. 4, Dec. 2002, pp. 35-42, http://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/649.