  We study whether the individual violation of the lepton numbers L_{e,mu,tau}
in the charged sector can lead to measurable rates for BR(mu->e gamma) and
BR(tau->mu gamma). We consider three different scenarios, the fist one
corresponds to the Minimal Supersymmetric Standard Model with non-universal
soft terms. In the other two cases the violation of flavor in the leptonic
charged sector is associated to the neutrino problem in models with a see-saw
mechanism and with R-parity violation respectively.
