Bignami, C., Valerio, E., Carminati, E., Doglioni, C., Petricca, P., Tizzani, P. and Lanari, R. 2020. Are normal fault earthquakes due to elastic rebound or gravitational collapse?. Annals of Geophysics. 63, 2 (May 2020), SE213. DOI:https://doi.org/10.4401/ag-8455.