Galvis-Aponte, Luis Armando, and Lucas Wilfried Hahn-De-Castro. “Growth in Colombian Municipalities: The Role of Spatial Externalities, the Human Capital and Physical Capital”. Sociedad y Economía, no. 31 (July 15, 2016): 149–174. Accessed April 3, 2025. https://sociedadyeconomia.univalle.edu.co/index.php/sociedad_y_economia/article/view/3892.