KULKA, Zbigniew. Advances in Digitization of Microphones and Loudspeakers. Archives of Acoustics, [S. l.], v. 36, n. 2, p. 419–436, 2011. Disponível em: http://acoustics.ippt.gov.pl/index.php/aa/article/view/187. Acesso em: 18 apr. 2026.