Design and Implementation of Intelligent Mobile Robot based on Microcontroller by using Three Ultrasonic Sensors. International Journal of Current Engineering and Technology, [S. l.], v. 7, n. 6, p. 2051–2056, 2017. Disponível em: https://ijcet.evegenis.org/index.php/ijcet/article/view/2582. Acesso em: 13 mar. 2026.