Cyclic components of abelian varieties (mod℘)

Consider A an abelian variety of dimension r, defined over a number field F. For ℘ a finite prime of F  , we denote by F℘F℘ the residue field at ℘. If A   has good reduction at ℘, let A¯ be the reduction of A at ℘. In this paper, under GRH, we obtain an asymptotic formula for the number of primes ℘ of F  , with NF/Q℘≤xNF/Q℘≤x, for which A¯(F℘) has at most 2r−12r−1 cyclic components.