MAKAREWICZ, R.; GOŁĘBIEWSKI, R. Vertical distribution of road traffic noise. Archives of Acoustics, [S. l.], v. 23, n. 4, p. 481–490, 1998. Disponível em: http://acoustics.ippt.gov.pl/index.php/aa/article/view/1041. Acesso em: 18 apr. 2026.