1. Capaccioni B, Coniglio S, Fratini F (1991) Clay minerals on recent products of hydromagmatic activity: considerations on their genesis. Acta Vulcanol 1:69–77
2. Capaccioni B, Martini M, Mangani F, Giannini L, Nappi G, Prati F (1993) Light hydrocarbons in gas emissions from volcanic areas and geothermal fields. Geochem J 27:7–17
3. Carapezza M, Nuccio M, Valenza M (1981) Genesis and evolution of the fumaroles of Vulcano (Aeolian island, Italy): a geochemical model. Bull Volcanol 44:548–563
4. Cioni R, D'Amore F (1984) A genetic model for the crater fumaroles of Vulcano island (Sicily, Italy). Geothermics 2:154–173
5. Cioni R, Corazza E, Magro G, Guidi M, Marini L (1988) Reactive and inert gases in low temperature fumaroles (Acolian Islands, Italy). SIMP 43:1003–1011