Naranjo M. F., S. K. Ebmeier, S. Vallejo, P. Ramón, P. Mothes, J. Biggs, F. Herrera (2016). Mapping and measuring lava volumes from 2002 to 2009 at El Reventador Volcano, Ecuador, from field measurements and satellite remote sensing, Applied Volcanol. 5: 8. doi: 10.1186/s13617-016-0048-z