Gafà, R. M., L. Martarelli, D. Pieruccioni, and M. Roma. “[Geological and Hydrogeological Markers for Prevention and Reduction of Radon Exposition Risk]”. Acque Sotterranee - Italian Journal of Groundwater, vol. 10, no. 4, Dec. 2021, pp. 77-79, doi:10.7343/as-2021-539.