N. S. . Ahmed zeki, S. J. Hussein, K. K. . Aoyed, S. K. Ibrahim, and I. K. Mehawee, “Synthesis and Characterization of Co-Mo/γ-Alumina Catalyst from local Kaolin clay for Hydrodesulfurization of Iraqi Naphtha”, Journal of Petroleum Research and Studies, vol. 11, no. 1, pp. 84-106, Mar. 2021.