Assessment of marine geoid models by ship-borne GNSS profilesVarbla, Sander; Ellmann, Artu; Märdla, Silja; Gruno, AntiGeodesy and cartography2017 / p. 41-49 : ill https://doi.org/10.3846/20296991.2017.1330771

Determining regional sea surface topography by GNSS surveys on iceLiibusk, Aive; Märdla, Silja; Ellmann, Artu; Oja, Tõnis2014 IEEE/OES Baltic International Symposium : 26-29 May 2014, Tallinn, Estonia : [proceedings]2014 / [9] p. : ill

Determining sea surface heights using small footprint airborne laser scanningGruno, Anti; Liibusk, Aive; Ellmann, ArtuRemote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2013 : 24 September 2013, Dresden, Germany2013 / p. 88880R-1-88880R-13 : ill