Nguyen, Thanh Trung, and Van Thom Phung. “Influence of the Fixed Angle of the Non-Circular Gears on the Intermediate Shaft on the Gear Ratio Function Characteristics”. JST: Engineering And Technology For Sustainable Development 33, no. 2 (April 15, 2023): 52–59. Accessed June 23, 2025. https://jst.vn/index.php/etsd/article/view/337.