First observation of H redshifted emission in RR Lyr - Evidence of a supersonic infalling motion of the atmosphere
D. Gillet, B. Mauclaire, T. Garrel, T. Lemoult, Ph. Mathias, T. de France, J.-S. Devaux, H. Boussier, D. Verilhac, G. Brabant, J. Desbordes, O. Garde and the GRRR Collaboration
