Colangelo, G., Lanfredi, M., Lapenna, V., Macchiato, M., & Vallianatos, F. (2001). Short time scale laws in self-potentialsignals from two different seismically active Mediterranean areas(the Southern Apennine chainand Crete Island). Annals of Geophysics, 44(2). https://doi.org/10.4401/ag-3591