Colangelo, G., Lanfredi, M., Lapenna, V., Macchiato, M. and 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). doi: 10.4401/ag-3591.