Bella, F., P. F. Biagi, M. Caputo, G. Della Monica, A. Ermini, W. Plastino, and V. Sgrigna. “Normal and Anomalous Behaviour of Electric, Magnetic and Seismoacoustic Signals Recorded in the Amare Cave”. Annals of Geophysics 39, no. 1 (November 25, 1996). Accessed April 25, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/3954.