GROEN, Ben M. The Vocalic System in Baudouin de Courtenay’s Opyt fonetiki rez’janskix govorov. Slovene Studies Journal, [S. l.], v. 9, n. 1, p. 105–109, 1987. DOI: 10.7152/ssj.v9i1.3689. Disponível em: https://journals.lib.washington.edu/index.php/ssj/article/view/3689. Acesso em: 2 may. 2026.