THE IMPACT OF THE HIDDEN ECONOMY ON THE SOCIO-ECONOMIC DEVELOPMENT OF REGIONS. International journal of artificial intelligence, [S. l.], v. 5, n. 10, p. 140–145, 2025. Disponível em: https://www.academicpublishers.org/journals/index.php/ijai/article/view/6727.. Acesso em: 12 oct. 2025.