@article{Mathieu:4352,
      author        = "Mathieu, Sophie and Delouille, Veronique  and Lefèvre,
                       Laure  and Ritter, Christian  and Von Sachs, Rainer",
      title         = "{Modélisation et estimation du nombre de taches
                       solaires}",
      month         = "Aug",
      year          = "2019",
}