KRECZMER, Bogdan. “Estimation of the Azimuth Angle of the Arrival Direction for an Ultrasonic Signal by Using Indirect Determination of the Phase Shift”. Archives of Acoustics 44, no. 3 (July 11, 2019): 585–601. Accessed July 2, 2025. https://acoustics.ippt.pan.pl/index.php/aa/article/view/2427.