Tassi, F., B. Capaccioni, F. Capecchiacci, y O. Vaselli. 2009. «Non-Methane Volatile Organic Compounds (VOCs) at El Chichón Volcano (Chiapas, México): Geochemical Features, Origin and Behavior». Geofísica Internacional 50 (4):85-95. https://doi.org/10.22201/igeof.00167169p.2011.50.4.153.