GOŁEBIEWSKI, Roman, Andrzej WICHER, Artur DURAJ, Milena KACZMAREK-KLINOWSKA, and Karina MRUGALSKA-HANDKE. “Objective and Subjective Assessment of the Sound Attenuation Efficiency Obtained by Custom Moulded Earplugs With Various Acoustic Filters – a Preliminary Study”. Archives of Acoustics 47, no. 2 (May 25, 2022): 201–212. Accessed April 25, 2025. https://acoustics3.ippt.pan.pl/index.php/aa/article/view/3101.