JUMIYATUN. Comparison of PID control, Backstepping, Backstepping PDPI on Take-off and Hover Quadcopter Positions. International Journal on Smart Material and Mechatronics, [S. l.], v. 4, n. 1, p. 237–242, 2017. Disponível em: https://ijsmm.id/index.php/ijsmm/article/view/40. Acesso em: 27 aug. 2025.