Cristofolini R, Patanè G, Recupero S. Morphologic evidence for ancient volcanic centres and indications of magma reservoirs underneath Mt. Etna, Sicily. Geog. Fis. Dinam. Quat. 1982;5(1):3-9. Accessed October 25, 2025. https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/961