NASIR, L. M.; OGBEIDE-IGIEBOR, V.; OZIGIS, I. I. Emission Characterization of Petrol, Ethanol and Spent Engine Oil Blends for Two-Stroke Spark Ignition Engine. ABUAD Journal of Engineering Research and Development, v. 6, n. 2, p. 39-49, 14 Aug. 2023.