Ricardo Viveros, J., Andrés Orozco, J. and María Cruz, Ángela (2012) “The health and work conditions of informal traders marketplaces of Popayán, Colombia”, Revista Colombiana de Salud Ocupacional, 2(3), pp. 5–12. Available at: https://revistas.unilibre.edu.co/index.php/rc_salud_ocupa/article/view/4837 (Accessed: 5 December 2025).