Palatella, Luigi; Allegrini, Paolo; Grigolini, Paolo; … - In: Physica A: Statistical Mechanics and its Applications 338 (2004) 1, pp. 201-205
With the help of the diffusion entropy technique we show the non-Poisson statistics of the distances between consecutive Omori's swarms of earthquakes. We give an analytical proof of the numerical results of an earlier paper (Phys. Rev. Lett. 90 (2003) 188501).