GHECHAM, M. A. The impact of informal sector on income distribution: Could concentration of income be explained by the size of informal sector?. International Journal of Economics and Financial Issues, [S. l.], v. 7, n. 1, p. 594–600, 2017. Disponível em: https://www.econjournals.com/index.php/ijefi/article/view/3130. Acesso em: 2 oct. 2022.