Prof. M. K. Khunti, and Prof. K. S. Vaghoshi. “Contact Stress Analysis of Spur Gear (EN 8) of PTO Drive Using Finite Element Analysis”. International Journal of Advance Engineering and Research Development (IJAERD), vol. 5, no. 1, Jan. 2018, pp. 280-5, https://www.ijaerd.org/index.php/IJAERD/article/view/2123.