6883 20240306154147.0 10.1088/1681-7575/acbd52 DOI SCART-2024-0121 Petit, Gérard Calibration of GNSS stations for UTC 2023 NO Defraigne, Pascale Metrologia 60 2023 2 025009 pascale.defraigne@ksb-orb.be published in REFERD