1. Parco Archeologico delle Isole Eolie, Museo Luigi Bernabò Brea, via Castello 2, Lipari, Italy
2. Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Etneo, Piazza Roma 2, 95125Catania, Italy
3. University of Milan, department of Physics “Aldo Pontremoli”,via Celoria 16, 20133Milano, Italy
4. University of Pavia, Department of Chemistry, Via Taramelli 12, 27100Pavia, Italy
5. IGG-CNR, Via G. Moruzzi 1 56124Pisa, Italy