Ravi, P., and S. Govindan. “EFFECT OF EXHAUST GAS RECIRCULATION ON EMISSION CHARACTERISTICS OF COMPRESSION IGNITION ENGINE WITH COTTONSEED BIODIESEL”. Innovare Journal of Engineering and Technology, vol. 6, no. 1, July 2018, pp. 1-5, https://innovareacademics.in/journals/index.php/ijet/article/view/16298.