4898 20200605152946.0 CTALK-2020-0115 Píriz, R Safety Analysis for a New GNSS Timing Service via EGNOS and Galileo 2019 2019-09-19 NO Buendía, F Martín, JR Fidalgo, J Defraigne, Pascale Danesi, A Jeannot, M Boyero, JP ION GNSS pascale.defraigne@observatoire.be Contributed CTALKCONT