I. PENKOV; D. ALEKSANDROV. Analysis and study of the influence of the geometrical parameters of mini unmanned quad-rotor helicopters to optimise energy saving . International Journal of Automotive and Mechanical Engineering, [S. l.], v. 14, n. 4, p. 4730–4746, 2022. DOI: 10.15282/ijame.14.4.2017.11.0372. Disponível em: https://journal.ump.edu.my/ijame/article/view/8011. Acesso em: 19 may. 2024.