[1]
P. A. LEWIN and A. NOWICKI, “Acoustic output levels and ultrasound output display standard”, Arch. Acoust., vol. 23, no. 2, pp. 267–280, May 2014, Accessed: Jan. 18, 2026. [Online]. Available: https://acoustics.ippt.gov.pl/index.php/aa/article/view/911