author        = "Chmiel, M. and Mordret, A. and Boué, P. and Brenguier, F.
                       and Lecocq, T. and Courbis, R. and Hollis, D. and Campman,
                       X. and Romijn, R. and Van der Veen, W",
      title         = "{Ambient noise multimode Rayleigh and Love wave tomography
                       to determine the shear velocity structure above the
                       Groningen gas field}",
      year          = "2019",