Saari, T., Poutanen, M., Saaranen, V., Kaartinen, H., Kukko, A. and Lahtinen, S. 2015. Height determination techniques for the next national height system of Finland - a case study. Geodesy and Cartography. 41, 4 (Dec. 2015), 145-155. DOI:https://doi.org/10.3846/20296991.2015.1120387.