author        = "Lainey, V. and Jacobson, R.A. and Tajeddine, R. and
                       Cooper, N.J. and Murray, C. and Robert, V. and Tobie, G.
                       and Guillot, T. and Mathis, S. and Remus, F. and Desmars,
                       J. and Arlot, J.-E. and De Cuyper, J.-P. and Dehant, V. and
                       Pascu, D. and Thuillot, W. and Le Poncin-Lafitte, Ch. and
                       Zahn, J.-P.",
      title         = "{New constraints on on Saturn's interior from Cassini
                       astrometric data.}",
      year          = "2017",