Alhassan, M., U. Z. Faruq, A. Galadima, M. Suleiman, Y. Nasiru, A. A. Garba, and A. S. Yelwa. “Preparation and Characterization of Mixed-Oxide Catalyst ”. Earthline Journal of Chemical Sciences, Vol. 2, no. 2, Oct. 2019, pp. 293-02, doi:10.34198/ejcs.2219.293302.