R. Colacicchi and R. Bizzarri, “Correlation between environmental evolution, historical settlement and cultural heritage upgrading in Valle Umbra (Central Italy)”, Geog. Fis. Dinam. Quat., vol. 31, no. 2, pp. 107–118, Dec. 2008, Accessed: Apr. 04, 2025. [Online]. Available: https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/292