Andwari, Amin Mahmoudzadeh, Azhar Abdul Aziz, Mohd Farid Muhamad Said, Vahid Esfahanian, Zulkarnain Abdul Latiff, and Sharil Nizam Mohamad Said. 2017. “Effect of Internal and External EGR on Cyclic Variability and Emissions of a Spark Ignition Two-Stroke Cycle Gasoline Engine”. Journal of Mechanical Engineering and Sciences 11 (4):3004-14. https://doi.org/10.15282/jmes.11.4.2017.4.0270.