ШЕВЧЕНКО О. О. Shevchenko O. O. Positional conditions of realization of vowel phonemes in modern German. Philological Treatises, [S. l.], v. 5, n. 4, p. 77–83, 2020. Disponível em: https://tractatus.sumdu.edu.ua/index.php/journal/article/view/458. Acesso em: 28 sep. 2022.