Bisci, Carlo, et al. “Climatic Conditions and Sporadic Permafrost in the Maiella Massif (Central Apennines, Italy)”. Geografia Fisica E Dinamica Quaternaria, vol. 26, no. 1, June 2024, pp. 3-13, https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/406.