TY - CONF T1 - The use of a serial system of cylindrical and concentric Helmholtz resonators for low frequency sound absorption JO - Proceedings of the International Congress on Acoustics PY - 2019/01/01 AU - Dell A AU - Krynkin A ED - DO - DOI: 10.18154/RWTH-CONV-239788 SN - 9783939296157 VL - 2019-September SP - 4480 EP - 4485 Y2 - 2025/07/30 ER -