@article{Robert:2130,
      author        = "Robert, V. and Lainey, V. and Pascu, D. and Arlot, J.-E.
                       and De Cuyper, J.-P. and Dehant, V. and Thuillot, W.",
      title         = "{Astrometric observations of Phobos and Deimos during the
                       1971 opposition of Mars}",
      year          = "2014",
}