Al-Hemiri, Adil A, Ghazi F Nejmaldin, and Wadood T Mohammed. “Vapor Phase Oxidation of Benzoic Acid to Phenol Using Nickel-Iron Oxides Catalysts”. Iraqi Journal of Chemical and Petroleum Engineering 3, no. 4 (December 30, 2002): 13–18. Accessed March 29, 2025. https://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/646.