SHEET, E. A. E. Relative Change in SI Engine’s Emission and Performance Parameters Using New Locally Made Octane Enhancer. Journal of Petroleum Research and Studies, [S. l.], v. 7, n. 4, p. 1-24, 2017. DOI: 10.52716/jprs.v7i4.200. Disponível em: https://jprs.gov.iq/index.php/jprs/article/view/200. Acesso em: 20 dec. 2024.