@article{Defraigne:5926,
      author        = "Defraigne, P. and Bertrand, B. and Kolenberg, K. and Pham,
                       L.B.S. and Langenaken, H.",
      title         = "{Summer time or winter time? The Royal Observatory of
                       Belgium informs (EN/FR/NL)}",
      month         = "Oct",
      year          = "2018",
}