@article{Steffen:4731,
      author        = "Steffen, R. and Legrand, J. and Steffen, H.  and Lidberg,
                       M. and Kenyeres, A.  and Brockmann, E.  and Lutz, S.",
      title         = "{Deformation model for Europe: Application of the
                       least-square collocation }",
      month         = "Apr",
      year          = "2019",
}