49th Winter School on Wave and Quantum Acoustics, 24–27.02.2020, Hotel Meta, Szczyrk

48th Winter School on Environmental Acoustics and Vibroacoustcs, 24–28.02.2020, Hotel Meta, Szczyrk

24th Conference on Acoustic and Biomedical Engineering, 31.03–3.04.2020, Hotel Hyrny, Zakopane