1. School of Engineering, Tallinn University of Technology, Tallinn, Estonia
2. Lantmäteriet, The Swedish Mapping, Cadastral, and Land Registration Authority, Gävle, Sweden
3. National Space Institute, Technical University of Denmark, Lyngby, Denmark
4. Department of Geodesy, Estonian Land Board, Tallinn, Estonia
5. Finnish Geospatial Research Institute, National Land Survey of Finland, Masala, Finland
6. Geodetic Institute, Norwegian Mapping Authority, Hønefoss, Norway
7. Department of Geodesy and Cadastre, Vilnius Gediminas Technical University, Vilnius, Lithuania
8. Geodesy division, Latvian Geospatial Information Agency, Riga, Latvia
9. Faculty of Civil Engineering, Riga Technical University, Riga, Latvia