2017-09-182017-09-182001GARCIA, Ronaldo Alves; SOTOMAYOR, J. Structurally stable configurations of lines of mean curvature and umbilc points on surfaces immersed in R3. Publicacions Matemà tiques, Barcelona, v. 45, n. 2, p. 431-466, 2001.0214-1493http://repositorio.bc.ufg.br/handle/ri/12484engAcesso AbertoStructurally stable configurations of lines of mean curvature and umbilc points on surfaces immersed in R3Artigo