SALAMON, R., R. KOWALIK, and I. POSTAWKA. “Detection and Signal Processing in the Acoustic Echolocation System for the Blind”. Archives of Acoustics 22, no. 3 (January 1, 2014): 277–296. Accessed April 29, 2025. https://acoustics3.ippt.pan.pl/index.php/aa/article/view/955.