1. Abiyudo R, Hadi J, Cumming W, Marini L (2016) Conceptual model assessment of vapor core geothermal system for exploration. Mt. Bromo case study. In: Proceedings of the 4th Indonesia international geothermal convention and exhibition 2016, 10–12 August 2016, Cendrawasih Hall, Jakarta Convention Center, Indonesia
2. Aiuppa A, Tamburello G, Di Napoli R, Cardellini C, Chiodini G, Giudice G, Grassa F, Pedone M (2013) First observations of the fumarolic gas output from a restless caldera: implications for the current period of unrest (2005–2013) at Campi Flegrei. Geochem Geophys Geosyst 14(10):4153–4169
3. Apuada NA, Sigurjonsson GF (2008) The geothermal potential of Biliran Island, Philippines. In: Proceedings of the 8th Asian geothermal symposium, 73–77
4. Bogie I, Lawless JV, Rychagov S, Belousov V (2005) Magmatic-related hydrothermal systems: classification of the types of geothermal systems and their ore mineralization. In: Proceedings of geoconference in Russia, Kuril
5. Caliro S, Chiodini G, Moretti R, Avino R, Granieri D, Russo M, Fiebig J (2007) The origin of the fumaroles of La Solfatara (Campi Flegrei, south Italy). Geochim Cosmochim Acta 71(12):3040–3055