Liuzzo, M.; Aiuppa, A.; Giudice, G.; Gurrieri, S. (19–24 April 2009). Real-time Multi-GAS sensing of volcanic gas composition: experiences from the permanent Etna and Stromboli networks. EGU General Assembly 2009. Vol. 11. Vienna, Austria. p. 5839. Bibcode:2009EGUGA..11.5839L.
Liuzzo, M.; Aiuppa, A.; Giudice, G.; Gurrieri, S. (19–24 April 2009). Real-time Multi-GAS sensing of volcanic gas composition: experiences from the permanent Etna and Stromboli networks. EGU General Assembly 2009. Vol. 11. Vienna, Austria. p. 5839. Bibcode:2009EGUGA..11.5839L.