BORGES MENDES, Cláudia Ohana, and Maria Alzira DE ARAÚJO NUNES. “Numerical Methodology to Obtain the Sound Absorption of Materials by Inserting the Acoustic Impedance”. Archives of Acoustics, vol. 46, no. 4, Dec. 2021, pp. 649–656, https://doi.org/10.24425/aoa.2021.139641.