A. Buker, R., R., O. M. Ramadhan, O., M. Kh. Al-Rashidi, and M. “Application of Iraqi Natural Rich-Bauxite Mineral Clays Doped With Chromium Oxides in Upgrading of Iraqi Kerosene”. Journal of Education and Science (JES), vol. 26, no. 4, Oct. 2013, pp. 21-28, doi:10.33899/edusj.2013.89979.