J. ŻERA, T. BOEHM, and T. ŁĘTOWSKI, “Application of an automatic audiometer in the measurement of the directional characteristic of hearing”, Arch. Acoust., vol. 7, no. 3-4, pp. 197–206, Mar. 2016, Accessed: Apr. 26, 2025. [Online]. Available: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/3282