Cucchi, Franco, Paolo Forti, and Furio Finocchiaro. 1998. “Gypsum Degradation in Italy With Respect to Climatic, Textural and Erosional Conditions”. Geografia Fisica E Dinamica Quaternaria 3 (4): 41-49. https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/1194.