4891 20200605145420.0 SCART-2020-0110 Pinat, Elisa Seasonal variations of snow height in east antarctica using gnss interferometric reflectometry 2019 NO Bergeot, Nicolas Defraigne, Pascale Chevalier, Jean-Marie proceedings of the 7th International Colloquium on Scientific and Fundamental Aspects of GNSS 2019 pascale.defraigne@observatoire.be published in NONREF