A Low Frequency Model for Acoustic Propagation in a 2D Flow Duct: Numerical Computation. Communications in Computational Physics, [S. l.], v. 11, n. 2, p. 508–524, 2020. DOI: 10.4208/cicp.181209.040111s. Disponível em: https://global-sci.com/index.php/cicp/article/view/5918. Acesso em: 5 dec. 2025.