Z. TRAWIŃSKI and D. J. CATHIGNOL, “Pseudorandom ultrasonic Doppler meter of liquid flow and profile with digital serial signal processing”, Arch. Acoust., vol. 15, no. 3-4, pp. 499–514, May 2014, Accessed: Jan. 17, 2026. [Online]. Available: https://acoustics.ippt.gov.pl/index.php/aa/article/view/1303