F. Martini, F. Tassi, O. Vaselli, R. Del Potro, M. Martinez, and R. Van del Laat (2010)
Geophysical, geochemical and geodetical signals of reawakening at Turrialba volcano (Costa Rica) after almost 150 years of quiescence
Journal of Volcanology and Geothermal Research, 198(3-4):416–432.