CASTRO ESCOBAR, Edisson Stiven; RAMÍREZ OSPINA, Duván Emilio; SERNA GÓMEZ, Héctor Mauricio. Informal sales in the public space in Villavicencio (Colombia). Semestre Económico, [S. l.], v. 21, n. 46, p. 141–166, 2016. DOI: 10.22395/seec.v21n46a6. Disponível em: https://revistas.udem.edu.co/index.php/economico/article/view/2662. Acesso em: 18 apr. 2026.