Paper 'Empirical assessment of the validity limits of the surface wave full ray theory using realistic 3- D Earth models' was published in Geophysical Journal International

15 February, 2016

L. Parisi, A.M.G. Ferreira. Empirical assessment of the validity limits of the surface wave full ray theory using realistic 3- D Earth models.  Geophys. J. Int. (2016) 205, 146–159, doi: 10.1093/gji/ggw005