Borrero, C., L. M. Toro, M. Alvarán, y H. Castillo. 2009. «Geochemistry and Tectonic Controls of the Effusive Activity Related With the Ancestral Nevado Del Ruiz Volcano, Colombia». Geofísica Internacional 48 (1):149-69. https://doi.org/10.22201/igeof.00167169p.2009.48.1.105.