Pinzón, Tito Morales, and Jhon Jairo Arias. “Vehicle Pollution in the Pereira-Dosquebradas Conurbation”. Revista Luna Azul (On Line), no. 37 (July 1, 2013): 101–129. Accessed August 24, 2024. https://revistasojs.ucaldas.edu.co/index.php/lunazul/article/view/1678.