Study of Adding Ethanol to Gasoline Effects on Produced Noise Intensity of Single Cylinder Spark Ignition Engine. Al-Khwarizmi Engineering Journal, [S. l.], v. 7, n. 2, p. 83–90, 2011. Disponível em: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/42.. Acesso em: 1 may. 2024.