- An initiative for a European Height Reference SurfaceSchwabe, Joachim; Sacher, Martina; Liebsch, Gunter; Lidberg, Martin; Denker, Heiner; Ågren, Jonas; Alfredsson, Anders; Barzaghi, Riccardo; Ellmann, Artu; Varbla, SanderXXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)2023 https://doi.org/10.57757/IUGG23-2451
- Status report for the EUREF Working Group “European Unified Height Reference”Schwabe, Joachim; Sacher, Martina; Liebsch, Gunter; Lidberg, Martin; Denker, Heiner; Ågren, Jonas; Alfredson, Anders; Barzaghi, Riccardo; Ellmann, Artu; Varbla, SanderAbstracts EUREF 20232023 / p. 9-10 https://www.chalmers.se/api/media/?url=https://cms.www.chalmers.se/Media/vifgxlhe/abstract_booklet_euref_2023_may22.pdf?
- Use of high resolution sea level measurements for height transfer in the West-Estonian archipelagoLiibusk, Aive; Ellmann, Artu; Kõuts, TarmoThe 8th International Conference Environmental Engineering : May 19-20, 2011, Vilnius, Lithuania : selected papers. Volume III2011 / p. 1374-1381 : ill