LEWIN, P. A., and M. A. SCHAFER. “Wideband Characterization of Ultrasound Transducers and Materials Using Time Delay Spectrometry”. Archives of Acoustics 17, no. 1 (May 1, 2014): 103–115. Accessed April 26, 2025. https://acoustics3.ippt.pan.pl/index.php/aa/article/view/1175.