Giammanco, S., Krajnc, B., Kotnik, J., & Ogrinc, N. (2017). Temporal analysis of d13C CO2 and CO2 efflux in soil gas emissions at Mt. Etna: a new tool for volcano monitoring. Annals of Geophysics, 60(6), S0665. https://doi.org/10.4401/ag-7305