Dramis F, Gentili B, Coltorti M, Cherubini C. Osservazioni geomorfologiche sui calanchi marchigiani: Geomorphological observations on badlands in the Marche region. Geog. Fis. Dinam. Quat. 1982;5(1):38-45. Accessed November 18, 2025. https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/964