Rassoul, G.A.R., and M. Kamil. “Component of Pattern Materials and Its Influence on Physical Properties”. Iraqi Journal of Chemical and Petroleum Engineering 2, no. 3 (September 30, 2001): 41–49. Accessed March 29, 2025. https://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/591.