Pecci, M., De Sisti, G., Marino, A., & Smiraglia, C. (2001). New radar surveys in monitoring the evolution of the Calderone Glacier (Central Apennines, Italy). Geografia Fisica E Dinamica Quaternaria, 5, 145-150. https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/1239