Sulaymon, Abbas, Yasamen Mustafa, Yasamen Mustafa, and Yasser Dahman. “Determination of Surface Diffusion Coefficient for Adsorption Process”. Iraqi Journal of Chemical and Petroleum Engineering 3, no. 2 (June 30, 2002): 35-40. Accessed November 30, 2019. http://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/626.