Lorè, Alessandro, Donatello Magaldi, and Marco Tallini. “Morphology and Morphometry of the Gran Sasso (Central Italy) Surface Karst”. Geografia Fisica e Dinamica Quaternaria 25, no. 2 (June 25, 2024): 123–134. Accessed December 21, 2024. https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/419.