R. Arjunraj, D. Karthick, R. Karuppusamy, K. C. Naveen kumar, and J. Nizamdeen. “Fabrication of PNEUMATIC Bumper in Four Wheeler”. International Journal of Intellectual Advancements and Research in Engineering Computations, vol. 7, no. 2, Aug. 2021, pp. 2646-50, https://ijiarec.com/ijiarec/article/view/360.