Improving and validating gravity data over ice-covered marine areasMärdla, Silja; Oja, Tõnis; Ellmann, Artu; Jürgenson, HarliIAG 150 years : proceedings of the 2013 IAG Scientific Assembly, Potsdam, Germany, 1-6 September, 20132016 / p. 263-270 : ill http://dx.doi.org/10.1007/1345_2015_163