N. M. Afandi, A. N. Abd Manap, F. H. Mansor, M. F. Abdul Ghani, N. Kadir, and W. Liu, “Characterization of Fe2O3/Mn2O3 Oxygen Carrier for Chemical Looping Combustion Prepared by Dry Impregnation Method”, IJET, vol. 7, no. 4.35, pp. 674–677, Nov. 2018, doi: 10.14419/ijet.v7i4.35.23087.