A. L. Khalaf, F. K. Al-Zuhairi, W. A. Kadhim, and M. H. A. Rahim, “THE EFFECTS OF CERIUM PROMOTER ON THE PERFORMANCE OF COBALT-BASED CATALYSTS IN FISCHER TROPSCH SYNTHESIS FOR LIQUID FUEL PRODUCTION”, IIUMEJ, vol. 21, no. 2, pp. 1–11, Jul. 2020.