Chiarabba, C., and A. Frepoli. “Minimum 1D Velocity Models in Central and Southern Italy: A Contribution to Better Constrain Hypocentral Determinations”. Annals of Geophysics 40, no. 4 (November 25, 1997). Accessed April 19, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/3888.