The essence and nature of the shadow economy: a systematic analysis of scientific research on reducing its share . International Scientific Journal Alfraganus, [S. l.], v. 2, n. 6, p. 47–55, 2024. DOI: 10.63294/isja/vol2iss6/143. Disponível em: https://journals.afu.uz/index.php/isja/article/view/143. Acesso em: 25 feb. 2026.