T. Mohammed, Wadood, and Sami M. Zaboon. “Recovery of Catalyst from Tar Formed in Phenol Production Unit”. Iraqi Journal of Chemical and Petroleum Engineering 10, no. 3 (September 30, 2009): 9–17. Accessed November 22, 2024. https://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/408.