Aive Liibusk kaitses filosoofiadoktori kraadi geodeesia erialalJürgenson, Harli; Ellmann, ArtuGeodeet2013 / lk. 92-93 : fot Calibration results of different type spring gravimeters from the repeated measurements of Estonian calibration linesOja, Tõnis; Nikolenko, T.; Türk, K.; Ellmann, Artu; Jürgenson, HarliGeophysical research abstracts2010 / p. EGU2010-13590 https://www.nordicgeodeticcommission.com/wp-content/uploads/2014/10/NKG2010_Calibration-Estonia_TOja.pdf Evaluation of a grace-based combined geopotential model over the Baltic countriesEllmann, Artu; Jürgenson, HarliGeodezija ir kartografija = Geodesy and cartography2008 / 2, p. 35-44 : ill https://www.tandfonline.com/doi/abs/10.3846/1392-1541.2008.34.35-44 Evaluation results of the Earth gravitational model EGM08 over the Baltic countriesEllmann, Artu; Kaminskis, J.; Parseliunas, E.; Jürgenson, Harli; Oja, TõnisNewton's bulletin2009 / 4, External quality evaluation reports of EGM08, p. 110-121 : ill Füüsikalise geodeesia ja gravimeetria alusedEllmann, Artu; Oja, Tõnis; Jürgenson, Harli2008 http://www.ester.ee/record=b2394460*est Geoid profiles in the Baltic Sea determined using GPS and sea level surfaceJürgenson, Harli; Liibusk, Aive; Ellmann, ArtuGeodezija ir kartografija = Geodesy and cartography2008 / 4, p. 109-115 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 Improving the terrestial gravity dataset in South-Estonia [Electronic resource]Oja, Tõnis; Gruno, Anti; Bloom, Ahti; Mäekivi, E.; Ellmann, Artu; All, Tarmo; Jürgenson, Harli; Michelson, M.Geophysical research abstracts2009 / p. EGU2009-10997 [CD-ROM] Kosmosetehnoloogia rakendused geoidi ja gravitatsioonivälja täpsustamiseks Eesti alalEllmann, Artu; Oja, Tõnis; Jürgenson, HarliGeodeet2011 / lk. 22-25 : ill Modelling the influence of terraced landforms to the Earth’s gravity fieldMärdla, Silja; Oja, Tõnis; Ellmann, Artu; Jürgenson, HarliGravity, Geoid and Height Systems : proceedings of the IAG Symposium GGHS2012, October 9-12, 2012, Venice, Italy2014 / p. 157-162 : ill Modelling the influence of terraced landforms to the Earth’s gravity fieldTalvik, Silja; Oja, Tõnis; Ellmann, Artu; Jürgenson, HarliInternational Symposium on Gravity, Geoid and Height Systems GGHS2012 : Venice, October 9-12, 20122013 Mudelpindade EST-GEOID2011 ja EST-GEOID2003 omavahelistest erinevustest ning võimalikust üleminekust uuele kõrgussüsteemileOja, Tõnis; Ellmann, Artu; Jürgenson, Harli; Kall, TarmoGeodeet2011 / lk. 31-37 : ill New Estonian map grid systemJürgenson, HarliGIS-Baltic Sea States '93 : exhibition, conference, Tallinn, Estonia, 29 November - 1 December 1993 : abstract book, catalogue1993 / p. 75 Performance of the Earth Gravitational Model EGM08 over the Baltic countries [Electronic resource]Ellmann, Artu; Kaminskis, J.; Parseliunas, E.; Jürgenson, Harli; Oja, TõnisGeophysical research abstracts2009 / p. EGU2009-9507 [CD-ROM] https://www.researchgate.net/publication/252195364_Performance_of_the_Earth_Gravitational_Model_EGM08_over_the_Baltic_countries Precise gravity surveys in South Estonia from 2009 to 2010Türk, Kristina; Sulaoja, Margis; Oja, Tõnis; Ellmann, Artu; Jürgenson, HarliThe 8th International Conference Environmental Engineering : May 19-20, 2011, Vilnius, Lithuania : selected papers. Volume III2011 / p. 1499-1505 : ill Precise hydrodynamic leveling by using pressure gaugesLiibusk, Aive; Ellmann, Artu; Kõuts, Tarmo; Jürgenson, HarliMarine geodesy2013 / p. 138-163 : ill Raskuskiirenduse anomaalvälja ja geoidi mudelpinna täpsustamine EestisEllmann, Artu; Oja, Tõnis; All, Tarmo; Jürgenson, Harli; Kall, Tarmo; Liibusk, AiveTartu Ülikooli Ilmade Observatooriumi 150. aastapäeva konverentside artiklid2016 / lk. 152-164 : ill Regional models of the gravity field from terrestrial gravity data of heterogeneous quality and density [Electronic resource]Märdla, Silja; Oja, Tõnis; Ellmann, Artu; Jürgenson, HarliGeophysical research abstracts2014 / p. EGU2014-168. [CD-ROM] Relative gravity measurements on ice-covered water bodiesOja, Tõnis; Bloom, Ahti; Talvik, Silja; Jürgenson, Harli; Ellmann, Artu150th Anniversary of the IAG : book of abstracts : September 1-6, 2013, Potsdam2013 / p. 379 Small-footprint airborne laser scanner data for validating marine geoid modelsGruno, Anti; Liibusk, Aive; Ellmann, Artu; Oja, Tõnis; Vain, Ants; Jürgenson, Harli2013 European Space Agency Living Planet Symposium : [programme and abstracts]2013 / [1] p Verifying hydrodynamic levelling results through improved land uplift rates in West-Estonian archipelago [Electronic resource]Liibusk, Aive; Ellmann, Artu; Kall, Tarmo; Jürgenson, Harli; Kollo, KarinInternational Workshop : Sea-Level and Adjustment of the Land Observations, and Models (SLALOM 2012) in Athens, Greece, March 19-22, 2012 : abstract book2012 / p. 32 [CD-ROM] Üksikpuu kõrguse mõõtmineKangur, Ahto; Märdla, Silja; Arumäe, Tauri; Jürgenson, Harli; Kask, PriitEesti Mets2015 / lk. 34-39 : fot https://artiklid.elnet.ee/record=b2763727*est