Agudelo Ospina, John Jairo. “VIAS - Freeware for Road Highway, Topography and GIS”. Revista Ingeniería de Construcción 23, no. 1 (April 3, 2008): 52–59. Accessed November 15, 2024. https://horizonteenfermeria.uc.cl/index.php/ric/article/view/16839.