1. 1 Aki K. & Richards P. , 1980 Quantitative Seismology, Theory and Methods, Freeman, San Francisco.
2. The 1997 Umbria-Marche, Italy, earthquake sequence: a first look at the main shocks and aftershocks,;Amato;Geophys. Res. Lett.,1998
3. Earthquake recurrence time variations with and without fault zone interactions,;Becker;Geophys. J. Int.,1998
4. 4 Bressan G. , Bragato B.L. , Govoni A. , 1999 Aftershock sequence analysis using a static fatigue approach, Boll. Geofis. Teor. Appl., in press.
5. 5 Byerlee J.D. , 1977 Friction of rocks, in Experimental Studies of Rock Friction with Application to Earthquake Prediction, pp.55-77, ed. Evernden, J.F., USGS, Menlo Park, CA.