LUYEN, Bui Khac. REFINING GEOIDAL HEIGHTS COMPUTED BY FULLY-NORMALISED SPHERICAL HARMONICS COEFFICIENTS OF THE EARTH GRAVITATIONAL MODEL EGM2008 BY ADJUSTMENT OF COMBINED GPS/LEVELLING/GEOID NETWORK. <b>Vietnam Journal of Earth Sciences</b>, <i>[S. l.]</i>, v. 36, n. 2, p. 169–174, 2014. DOI: 10.15625/0866-7187/36/2/4498. Disponível em: http://vjes.vast.vn/jse/article/view/4498. Acesso em: 8 nov. 2025.