Nguyễn Ngọc Phương, and Nguyễn Duy Phương. “Design the Model Control of Wind Turbine Speed by Bevel-Gear System”. Journal of Technical Education Science, vol. 8, no. 1, Apr. 2013, pp. 17-24, https://www.jte.edu.vn/index.php/jte/article/view/662.