ENGEL, Zbigniew; STRYCHNIEWICZ, Lesław. Analysis of directional radiation patterns of a system of flat plane sound sources. Archives of Acoustics, [S. l.], v. 10, n. 4, p. 335–344, 2015. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/3169. Acesso em: 25 apr. 2025.