RESEARCH FOCUS INTERNATIONAL SCIENTIFIC JOURNAL. Research Focus International Scientific Journal 2 (9). Research Focus International Scientific Journal, [S. l.], v. 2, n. 9, p. 1–123, 2022. DOI: 10.66073/10.66073. Disponível em: https://refocus.uz/index.php/rf/article/view/425. Acesso em: 13 jun. 2026.