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, vol. 31, no. 2, June 2024, pp. 107-18, https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/292.