K. Pradeep Kumar, T. Sivabalan, R. Ramachandran, S. Srinath, and R. Sridharan. “Semi-Automatic Gear Shifting Mechanism in Two Wheeler”. International Journal of Intellectual Advancements and Research in Engineering Computations, vol. 6, no. 1, Mar. 2018, pp. 484-8, doi:10.61096/ijiarec.v6.iss1.2018.484-488.