OCAMPO, Juan Guillermo; OSLEY GARZÓN, María. The Labor Risk System before Workers of the Informal Sector. Opinión Jurídica, [S. l.], v. 15, n. 30, p. 183–204, 2016. DOI: 10.22395/ojum.v15n30a9. Disponível em: https://revistas.udem.edu.co/index.php/opinion/article/view/2025. Acesso em: 4 apr. 2025.