@article{Lefèvre:4323,
      author        = "Lefèvre, Laure and Mathieu, Sophie and Clette, Frederic",
      title         = "{The Sunspot Number series: advanced statistics to model
                       sunspot counts}",
      month         = "Jul",
      year          = "2019",
      note          = "Session: Advances and Upcoming Developments in Solar and
                       Heliospheric Physics",
}