Rouwet, D., S. Bellomo, L. Brusca, S. Inguaggiato, M. Jutzeler, R. Mora, A. Mazot, R. Bernard, M. Cassidy, and Y. Taran. “Major and Trace Element Geochemistry of El Chichón Volcano-Hydrothermal System (Chiapas, México) in 2006-2007: Implications for Future Geochemical Monitoring”. Geofisica Internacional, vol. 48, no. 1, Jan. 2009, pp. 55-72, doi:10.22201/igeof.00167169p.2009.48.1.99.