References
- Bak , P. , Tang , C. and Wiesenfeld , K. 1987 . Phys. Rev. Lett. , 59 : 381
- 1988 . Phys. Rev. A , 38 : 364
- Diodati , P. , Marchesoni , F. and Piazza , S. 1991 . Phys. Rev. Lett. , 67 : 2239
- Caldarelli , G. , Castellano , C. and Petri , A. 1997 . (to be published)
- Caldarelli , G. , Di Tolla , F. and Petri , A. 1996 . Phys. Rev. Lett. , 77 : 2503
- Frenkel , J. and Kontorova , T. 1938 . Phys. Z. Sovvjlln. , 13 : 1
- 1939 . J. Phys. USSR , 1 : 37 Engl. Transl.
- Gutenberg , G. and Richter , C. F. 1956 . Ann. Geophys. , 9 : 1
- Hirata , T. 1987 . J. geophy., Res. , 92 : 6215
- Ishimoto , M. and Iida , K. 1939 . Bull. Earthq. Res. Inst. Tokyo Univ. , 17 : 443
- Lord , A. E. 1981 . Physical Acoustics , Edited by: Mason , W. P. and Thurston , R. N. New York : Academic Press .
- Mogi , K. 1966 . Tectonophysics , 5 : 35
- Omori , F. 1894 . Rep. Earth Inv. Commun. , 2 : 103 (in Japanese)
- Petri , A. , Paparo , G. , Vespignani , A. , Alippi , A. and Costantini , M. 1994 . Phys. Rev. Lett. , 73 : 3423
- Scholz , C. H. 1968 . Bull. seismol. Soc. Am. , 58 : 399
- Turcotte , D. 1990 . Fractals and Chaos in Geology and Geophysics , Cambridge University Press .
- Utsu . 1969 . Fac. Sci., Hokkaido Univ. , 3 : 129
- Vespignani , A. , Petri , A. , Alippi , A. , Paparo , G. and Costantini , M. 1995 . Fractals , 3 : 839
- Williams , R. V. 1980 . Acoustic Emission , Bristol : Adam Hilger .
- Zapperi , S. , Ray , P. , Stanley , H. E. and Vespignani , A. 1997 . Phys. Rev. Lett , 78 : 1408