JUNGRAITHMAYR, Herrmann. On Vowel Systems in Chadic: A Typological Overview. Folia Orientalia, [S. l.], v. 29, p. 119–129, 2026. Disponível em: https://wydawnictwo.pan.pl/index.php/fo/article/view/6209. Acesso em: 14 oct. 2026.