El-Mossalamy1, E.H., M. El-Batouti2, T. Ahmed3, L.M. Al-Harbi3, N.F. Al Harby4, and A.A. Al-Owais5. 2015. “Preparation and Physico-Chemical Characterization of Modified Acidic and Basic Metal Oxide Catalysts”. Asian Journal of Chemistry 27 (10):3625-32. https://doi.org/10.14233/ajchem.2015.18889.