Boschi, E., D. Pantosti, D. Slejko, M. Stucchi, and G. Valensise. “Introduction to the Volume (1, 36, 1993)”. Annals of Geophysics 36, no. 1 (November 25, 1993). Accessed April 27, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/4292.