HONG, THONG, and MAI PHAM. “Design and Optimization of Gearbox for the Thaco’s Tractor”. Science & Technology Development Journal - Engineering and Technology 3, no. 2 (August 13, 2020): 383-394. Accessed May 26, 2022. http://stdjet.scienceandtechnology.com.vn/index.php/stdjet/article/view/667.