SONGCHAO, Zhang; XINYU, Xue; ZHU, Sun; LIXIN, Zhou; YONGKUI, Jin. Downwash distribution of single-rotor unmanned agricultural helicopter on hovering state. International Journal of Agricultural and Biological Engineering, Beijing, China, v. 10, n. 5, p. 14–24, 2017. Disponível em: https://www.ijabe.org/index.php/ijabe/article/view/3079. Acesso em: 29 jan. 2026.