  G. Galanti and M .Roncadelli recently made public some comments on the
article by D. Wouters and P. Brun about irregularities induced by photon mixing
to axion-like particles in astrophysical media [Phys. Rev. D86, 043005 (2012)].
They claim in particular to have found some mistakes in the article. This note
is a response to their comments, we refute their arguments and show that the
results presented in the article are correct. It turns out most of the
misunderstandings come from the definition of the beam initial state, some
clarifications about which are given here.
