D. Ravichandran, V. Karthikraja, R. Karthikeyan, , K. Prawinkamashi, and S. Sakthivel. “Simulation and Analysis of Four Lobe Hollow Steering Shaft by Roll Forming”. International Journal of Intellectual Advancements and Research in Engineering Computations, vol. 7, no. 2, July 2021, pp. 2563-9, https://ijiarec.com/ijiarec/article/view/331.