GÓMEZ NARANJO, Luis Guillermo; BORRAEZ ÁLVAREZ, Andrés Felipe. NOTES ON THE INFORMAL ECONOMY CASE MEDELLIN. Semestre Económico, [S. l.], v. 8, n. 15, p. 31–46, 2014. Disponível em: https://revistas.udem.edu.co/index.php/economico/article/view/1108. Acesso em: 13 jul. 2026.