Colacicchi, Roberto, and Roberto Bizzarri. “Correlation Between Environmental Evolution, Historical Settlement and Cultural Heritage Upgrading in Valle Umbra (Central Italy)”. Geografia Fisica e Dinamica Quaternaria 31, no. 2 (June 18, 2024): 107–118. Accessed September 19, 2024. https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/292.