Duan, Dang Trung, and Vu Ngoc Anh. “A Study on Coaxial Rotor Aerodynamics”. VNUHCM Journal of Engineering and Technology 1, no. 3 (September 16, 2019): 18-25. Accessed April 7, 2026. https://et.vnuhcmjournal.com.vn/index.php/et/article/view/594.