RESEARCH FOCUS INTERNATIONAL SCIENTIFIC JOURNAL. Research Focus International Scientific Journal 1 (4). Research Focus International Scientific Journal, [S. l.], v. 1, n. 4, p. 1–409, 2022. DOI: 10.66073/researchfocus.v1i4.25. Disponível em: https://refocus.uz/index.php/rf/article/view/25. Acesso em: 28 jul. 2026.