KRECZMER, Bogdan. Azimuth Angle Determination for the Arrival Direction for an Ultrasonic Echo Signal. Journal of Automation, Mobile Robotics and Intelligent Systems, [S. l.], v. 11, n. 2, p. 31–41, 2017. DOI: 10.14313/JAMRIS_2-2017/14. Disponível em: https://www.jamris.org/index.php/JAMRIS/article/view/426. Acesso em: 30 apr. 2025.