Kopania, Joanna Maria, Kamil Wójciak, Patryk Gaj, and Grzegorz Bogusławski. 2026. “The Influence of the Surface of Ventilation Duct on Sound Attenuation in the Airflow”. Archives of Acoustics 51 (2): 317-31. https://doi.org/10.24423/archacoust.2026.4328.