MAKAREWICZ, R.; GOŁĘBIEWSKI, R. Refraction - the simplest case. Archives of Acoustics, [S. l.], v. 22, n. 1, p. 51–58, 1997. Disponível em: http://acoustics.ippt.gov.pl/index.php/aa/article/view/936. Acesso em: 18 apr. 2026.