ZHAO J, LI X, THOMPSON D, WANG Y, WANG W, ZHU L, et al. Analysis of a Geometrical-Stiffening Membrane Acoustic Metamaterial with Individually Tunable Multi-Frequencies. Arch. Acoust. [Internet]. 2021 Mar. 31 [cited 2026 Mar. 4];46(1):87–93. Available from: https://acoustics.ippt.gov.pl/index.php/aa/article/view/2877