Moschella, S., A. Cannata, G. Di Grazia, and S. Gresta. “Insights into Lava Fountain Eruptions at Mt. Etna by Improved Source Location of the Volcanic Tremor”. Annals of Geophysics, vol. 61, no. 4, Oct. 2018, p. VO446, doi:10.4401/ag-7552.