@article{Lefèvre:4322,
      author        = "Lefèvre, Laure and Mathieu, Sophie and von Sachs, Rainer
                       and Delouille, Véronique and Clette, Frédéric",
      title         = "{Advanced Statistics to model the Sunspot Number series}",
      month         = "Jul",
      year          = "2019",
}