Didkovskiy, Vitaly, Sergey Naida, and Vitaly Zaets. “Experimental Study into the Helmholtz resonators’ Resonance Properties over a Broad Frequency Band”. Eastern-European Journal of Enterprise Technologies 1, no. 5 (97) (January 29, 2019): 34–39. Accessed July 23, 2024. https://journals.uran.ua/eejet/article/view/155417.