Fernandes, Marcus Manoel, et al. “Geological, Geomorphological and Pedological Studies for the Rehabilitation of an Degraded Area by Mining Industry”. Ingeniería Investigación Y Desarrollo, vol. 6, no. 1, July 2008, pp. 2-5, https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/866.