Authors: Quattrocchi, F Di Stefano, G Pizzino, L Pongetti, F Romeo, G Scarlato, P Sciacca, U Urbini, G

Citation: F. Quattrocchi et al., Geochemical Monitoring System II prototype (GMS II) installation at the "Acqua Difesa" well, within the Etna region: first data during the 1999 volcanic crisis, J VOLCANOL, 101(3-4), 2000, pp. 273-306