Gómez-Gutiérrez, Diego Felipe, and Juan Carlos Molano-Mendoza. “Characterization of Alteration Zones and Intrusive Phases for the Prospectus ‘stock of Piedra Sentada’ (Saint Lucia) Cauca, Colombia”. Ingeniería Investigación Y Desarrollo, vol. 8, no. 1, July 2009, pp. 24-34, https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/892.