SONBUL, O.; KALASHNIKOV, A. N. DETERMINING THE OPERATING DISTANCE OF AIR ULTRASOUND RANGE FINDERS: CALCULATIONS AND EXPERIMENTS. International Journal of Computing, [S. l.], v. 13, n. 2, p. 125-131, 2014. DOI: 10.47839/ijc.13.2.627. Disponível em: https://www.computingonline.net/computing/article/view/627. Acesso em: 12 aug. 2022.