Vu Ngoc Pi, A Study on Optimal Determination of Partial Transmission Ratios of Helical Gearboxes with Second-Step Double Gear-Sets. journal = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology. January 2008, vol. 13(1). 26 - 29 [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/8837.