BAIZAKOV, D.; KARI, A. Shadow Economic Activities: Assessment and Minimization Problems. International Journal of Economics and Financial Issues, [S. l.], v. 6, n. 4, p. 1515–1524, 2016. Disponível em: https://www.econjournals.com/index.php/ijefi/article/view/3066. Acesso em: 29 apr. 2024.