Calamita, Fernando, Mauro Coltorti, Giovanni Deiana, Francesco Dramis, and Gilberto Pambianchi. “Neotectonic Evolution and Geomorphology of the Cascia and Norcia Depressions (Umbria-Marche Apennine)”. Geografia Fisica e Dinamica Quaternaria 5, no. 2 (December 31, 1982): 263–276. Accessed April 3, 2025. https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/954.