DEL RIO E. ON ACCURATE GEOID MODELING: DERIVATION OF DIRICHLET PROBLEMS THAT GOVERN GEOIDAL UNDULATIONS AND GEOID MODELING BY MEANS OF THE FINITE DIFFERENCE METHOD AND A HYBRID METHOD. BCG [Internet]. 6º de junho de 2014 [citado 4º de janeiro de 2026];20(2). Disponível em: https://revistas.ufpr.br/bcg/article/view/36746