de Siena , L , Sammarco , C , Cornwell , D G , La Rocca , M , Bianco , F , Zaccarelli , L & Nakahara , H 2018 , ' Ambient Seismic Noise Image of the Structurally Controlled Heat and Fluid Feeder Pathway at Campi Flegrei Caldera ' , Geophysical Research Letters , vol. 45 , no. 13 , pp. 6428-6436 . https://doi.org/10.1029/2018GL078817