author        = "Bousquet, P. and Blanc, M. and Ammannito, E. and Capria,
                       M.T. and Dehant, V. and Foing, B. and Grande, M. and Guo,
                       L. and Hutzler, A. and Lasue, J. and Lewis, J. and McNutt,
                       R.L. and Perino, M.A. and Rauer, H.",
      title         = "{Synthesis of the planetary exploration – Horizon 2061
                       – Foresight exercise.}",
      year          = "2021",