HOA, H. M. Construction of initial national quasi-geoid model VIGAC2017, first step to national spatial reference system in Vietnam. Vietnam Journal of Earth Sciences, [S. l.], v. 39, n. 2, p. 155–166, 2017. DOI: 10.15625/0866-7187/39/2/9702. Disponível em: https://vjs.ac.vn/index.php/jse/article/view/9702. Acesso em: 18 jul. 2024.