ULTRASONIC SENSOR BASED HIGHWAY TRAFFIC INFORMATION ACQUISITION SYSTEM. International Journal of Food and Nutritional Sciences, [S. l.], v. 8, n. 1, p. 1375–1382, 2019. Disponível em: https://www.ijfans.org/index.php/Journal/article/view/717. Acesso em: 20 sep. 2026.