TY - CPAPER AU - Dumitru, Paul AU - Plopeanu, Marin AU - Jocea, Andreea AU - Calin, Alexandru AU - Badescu, Octavian TI - APPROACHES ON GEOID MODELLING T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on INFORMATICS, GEOINFORMATICS AND REMOTE SENSING PY - 2013 SP - 57 EP - 64 pp DO - 10.5593/sgem2013/bb2.v2/s09.008 PB - Stef92 Technology ER -