IMIOŁCZYK, J. Determination of perceptual boundaries between the male, female and child’s voices in isolated synthethic Polish vowels. Archives of Acoustics, [S. l.], v. 16, n. 2, p. 305–323, 2014. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/1233. Acesso em: 29 apr. 2025.