Prof. Jitendra Pachbhai, Ashutosh Das, Gopal Deshkari, Willking Gajbhiye, and Nikhil Gajbhiye. “Performance of CI Engine While Changing the Injection Pressure Fueled With Waste Cooking Oil- A Review Paper”. International Journal of Advance Engineering and Research Development (IJAERD), vol. 5, no. 2, Feb. 2018, pp. 1004-9, https://ijaerd.org/index.php/IJAERD/article/view/5445.