Jasper A., Agbakwuru, and Ibhadode Akii A.O. “Development of a Wheel and Axle System Using a Resonating Spring for a Power Generation”. IJRDO - Journal of Electrical And Electronics Engineering 3, no. 10 (October 31, 2017): 06-17. Accessed April 24, 2024. https://www.ijrdo.org/index.php/eee/article/view/291.