A. Ali, H. S. Usman, and Z. Abdulwahab, “PYROLYSIS OF PETROLEUM OILY SLUDGE: A SUSTAINABLE APPROACH FOR WASTE VALORISATION AND ENERGY RECOVERY”, FJS, vol. 10, no. 7, pp. 265–271, Apr. 2026, doi: 10.33003/fjs-2026-1007-5066.