Band structure and transmission spectra in multiferroic based Sierpinski-carpet phononic crystalZafer Ozer, Selami Palaz, Amirullah M. Mamedov and Ekmel OzbayEur. Phys. J. Appl. Phys., 90 2 (2020) 20902DOI: https://doi.org/10.1051/epjap/2020190355