NAVARATNAM, Quillon. Design and Fabrication of an Autonomous Obstacle Avoidance Robot Using Ultrasonic Sensors. International Journal on Mechanical Engineering and Robotics, [S. l.], v. 6, n. 1, p. 1–6, 2017. Disponível em: https://journals.mriindia.com/index.php/ijmer/article/view/4519. Acesso em: 8 oct. 2026.