Kozłowska, B., Walencik-Łata, A., Immè, G., Catalano, R., Mangano, G., Morelli, D., & Giammanco, S. (2016). Natural radioactivity content in groundwater of Mt. Etna’s eastern flank and gamma background of surrounding rocks. Annals of Geophysics, 59(1), S0103. https://doi.org/10.4401/ag-6799