Kotarbińska, E., Kozłowski, E. and Młyński, R. (2014) “Objective tests and the assessment of the acoustic properties of ear-plugs”, Archives of Acoustics, 31(4(S), pp. 275–280. Available at: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/1356 (Accessed: 26 April 2025).