Rincón, Ómar (March 7, 2011). "Caracol, en su laberinto". El Tiempo (in Spanish). Archived from the original on April 17, 2023. Retrieved April 17, 2023.
Rincón, Ómar (March 7, 2011). "Caracol, en su laberinto". El Tiempo (in Spanish). Archived from the original on April 17, 2023. Retrieved April 17, 2023.