RESEARCH FOCUS INTERNATIONAL SCIENTIFIC JOURNAL. Research Focus International Scientific Journal 1 (3). Research Focus International Scientific Journal, [S. l.], v. 1, n. 3, p. 1–211, 2022. DOI: 10.66073/10.66073. Disponível em: https://refocus.uz/index.php/rf/article/view/20. Acesso em: 13 jun. 2026.