@article{costa_vázquez vázquez_antuna_1997,  title={Influence of Viscoelastic Properties on the Propagation of Small Amplitude Sound Waves},  volume={27},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97331997000300007},  DOI={10.1590/S0103-97331997000300007},  number={3},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Costa, Oscar Sotolongo and Vázquez Vázquez, Alexei and Antuna, José Marín},  year={1997},  month={Sep},  pages={379–383} }