Evaluation of a grace-based combined geopotential model over the Baltic countries
Ellmann, Artu
;
Jürgenson, Harli
Geodezija ir kartografija = Geodesy and cartography
2008
/
2, p. 35-44 : ill
https://www.tandfonline.com/doi/abs/10.3846/1392-1541.2008.34.35-44