Berrino, G. y Yokoyama, I. 2011. Common geophysical characteristics of Campi Flegrei, Rabaul and Usu: Three volcanic events. Geofísica Internacional. 50, 4 (oct. 2011), 411–424. DOI:https://doi.org/10.22201/igeof.00167169p.2011.50.4.153.