1. Badalamenti B, Gurrieri S, Hauser S, Parello F, Valenza M: Rend Soc Ital Mineral Petrol, M Carapezza Memorial Volume. 1988, 43 (4): 893-
2. Badalamenti B, Gurrieri S, Hauser S, Tonani F, Valenza M: Rendiconti SIMP. 1984, 39 (2): 367-
3. Chiodini G, Frondini F, Raco B: Bull Volcanol. 1996, 58: 41-10.1007/s004450050124.
4. Gerlach TM: Eos Trans. 1991, 72: 249-
5. Graziani G, Martilli A, Pareschi MT, Valenza M: J Volcanol Res. 1991, 75: 283-10.1016/S0377-0273(96)00067-4.