CALOI, P., and M. GIORGI. “SULLE OSCILLAZIONI LIBERE DEL LAGO DI ALBANO”. Annals of Geophysics 5, no. 2 (November 25, 1952): 247–255. Accessed April 26, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/5843.