  Lepton flavour asymmetries generated at the onset of the oscillations of
sterile neutrinos with masses above the electroweak scale can be large enough
to partly survive washout and to explain the baryon asymmetry of the Universe.
This opens up new regions of parameter space, where Leptogenesis is viable
within the type-I seesaw framework. In particular, we find it possible that the
sterile neutrinos masses are substantially below 10^9 GeV, while not being
degenerate. However, the required reheat temperature that is determined by the
begin of the oscillations lies some orders of magnitude above the sterile
neutrino mass-scale.
