W. Wszołek, M. Modrzejewski, and M. Przysiężny, “Acoustic analysis of esophageal speech in patients after total laryngectomy”, Arch. Acoust., vol. 32, no. 4(S), pp. 151–158, Jan. 2014, Accessed: Apr. 25, 2025. [Online]. Available: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/1403