Escobar García, Diego Alexander, et al. “Evolution of Accessibility Manizales (2000 - 2009) and Its Relationship With the Transport Infrastructure Construction”. Avances: Investigación En Ingeniería, vol. 10, no. 1, June 2013, pp. 35-41, https://revistas.unilibre.edu.co/index.php/avances/article/view/2724.