@unpublished{TUW-246478, author = {Maras, Jadre and Hohensinn, Roland and Weber, Robert and Chmelina, Klaus}, title = {Calculation of gravity terrain effects for the correction of sub-surface gyroscope observations}, year = {2015}, note = {poster presentation: IUGG 2015 General Assembly, Prag; 2015-06-22 -- 2015-07-02} }