A nonextensive statistical model of multiple particle breakage
  A time-dependent statistical description of multiple particle breakage is presented. The approach combines the Tsallis non-extensive entropy with a fractal kinetic equation for the time variation of the number of fragments. The obtained fragment size distribution function is tested by fitting some experimental reports. 
Oscar Sotolongo-Costa, Luis Manuel Gaggero-Sager and Miguel Eduardo   Mora-Ramos
cond-mat.stat-mech