1.
Bella F, Bella R, Biagi PF, Caputo M, Della Monica G, Ermini A, et al. Artificial and natural electromagnetic signals revealed during two years in the Amare cave (Central Italy). Ann. Geophys. [Internet]. 1994 Nov. 25 [cited 2026 Jun. 24];37(5 Sup.). Available from: https://www.annalsofgeophysics.eu/index.php/annals/article/view/4161