Valentin Danciu. "STUDY ON ACHIEVING A QUASIGEOID." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, INFORMATICS, GEOINFORMATICS AND REMOTE SENSING, 2015. https://doi.org/10.5593/sgem2015/b22/s9.058