NOWAKOWSKA, W.; GUBRYNOWICZ, R.; ŻARNECKI, P. On the model of vocal tract dynamics. Archives of Acoustics, [S. l.], v. 18, n. 4, p. 525–537, 1993. Disponível em: http://acoustics.ippt.gov.pl/index.php/aa/article/view/1161. Acesso em: 18 apr. 2026.