HASEGAWA, Tomohiko. Production of a Tilt Rotor System and a Speed Control of a DC Motor for Quadrotors. International Journal on Smart Material and Mechatronics, [S. l.], v. 4, n. 1, p. 278–281, 2017. Disponível em: https://ijsmm.id/index.php/ijsmm/article/view/38. Acesso em: 27 aug. 2025.