GOŁĘBIEWSKI, Roman. Simple methods for determination of the acoustical properties of ground surfaces. Archives of Acoustics, [S. l.], v. 32, n. 4, p. 827–837, 2014. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/683. Acesso em: 13 jan. 2025.