Pires, M. C. ., and L. A. . Paulino. “THE MIDDLE - INCOME TRAP IN BRAZIL: ECONOMICS CHALLENGES ON ROAD TO DEVELOPMENT”. Journal of Economics and Public Policies, vol. 2, no. 2, Apr. 2021, pp. 07-34, https://www.periodicos.unimontes.br/index.php/economiaepoliticaspublicas/article/view/4063.