ZHAO, J., LI, X., THOMPSON, D., WANG, Y., WANG, W., ZHU, L., & LIU, Y. (2021). Analysis of a Geometrical-Stiffening Membrane Acoustic Metamaterial with Individually Tunable Multi-Frequencies. Archives of Acoustics, 46(1), 87–93. https://doi.org/10.24425/aoa.2021.136563