POPOVICH M. M. Popovich M. M. Axiomatics and problems of studies of language system . Philological Treatises, [S. l.], v. 1, n. 2, p. 141–148, 2020. Disponível em: https://tractatus.sumdu.edu.ua/index.php/journal/article/view/838. Acesso em: 22 jul. 2024.