Media type: E-Article Title: Galileo and GLONASS group delay variations Contributor: Beer, Susanne; Wanninger, Lambert; Heßelbarth, Anja Published: Springer Science and Business Media LLC, 2020 Published in: GPS Solutions, 24 (2020) 1 Language: English DOI: 10.1007/s10291-019-0939-7 ISSN: 1521-1886; 1080-5370 Origination: Footnote: