W. Songkitti, T. Aroonsrisopon, and E. Wirojsakunchai. “An Analysis of Emissions from An Ethanol Flex-Fuel Vehicle under Two Distinct Driving Cycle Tests During Cold Start”. International Journal of Automotive and Mechanical Engineering, vol. 19, no. 1, Mar. 2022, pp. 9551-62, doi:10.15282/ijame.19.1.2022.18.0737.