Asst. professor Utkarsh Prajapati, Jay M Nizama, and Saurabh R Shrivastav. “ELECTRICITY GENERATION BY WHEEL AND MASSES”. International Journal of Advance Research in Engineering, Science & Technology, vol. 3, no. 7, July 2016, pp. 224-6, https://ijarest.org/index.php/ijarest/article/view/934.