Pettersen, Bjørn Ragnvald, Mirjam Bilker-Koivula, Kristian Breili, Andreas Engfeldt, Reinhard Falk, Olga Gitlein, Jon Glenn Omholt Gjevestad, W Hoppe, Dagny I Lysaker, Jaakko Mäkinen, Ove Christian Dahl Omang, A Reinhold, and Ludger Timmen. “An Accuracy Assessment of Absolute Gravimetric Observations in Fennoscandia”. Nordic Journal of Surveying and Real Estate Research 7, no. 1 (October 27, 2010). Accessed May 8, 2024. https://journal.fi/njs/article/view/3659.