LOMBARDO, G.; COCO, G.; CORRAO, M.; GRESTA, S. Features of seismic events and volcanic tremor during the preliminary stages of the 1991-1993 eruption of Mt. Etna. Annals of Geophysics, [S. l.], v. 39, n. 2, 1996. DOI: 10.4401/ag-3974. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/3974. Acesso em: 7 jul. 2022.