TRAWIŃSKI, Z., and D. J. CATHIGNOL. “Pseudorandom Ultrasonic Doppler Meter of Liquid Flow and Profile With Digital Serial Signal Processing”. Archives of Acoustics 15, no. 3-4 (May 1, 2014): 499–514. Accessed January 17, 2026. https://acoustics.ippt.gov.pl/index.php/aa/article/view/1303.