A comment on the paper `Coherence in Neutrino Oscillations' by C.Giunti. Either lepton flavour eigenstates or neutrino oscillations do not exist

The definition of `lepton flavour eigenstates’ introduced in a recent paper hep-ph/0302045 is in disagreement with the Standard Model prediction for the structure of the leptonic charged current and implies the absence of neutrino oscillations following pion decay, in contradiction to experimental data