@article{PM_2001_2001_1_a21,
     author = {Garc{\'\i}a, Ronaldo and Sotomayor, Jorge},
     title = {Configuraciones estructuralmente estables de l{\'\i}neas de curvatura media y puntos umbilicales en superficies inmersas en {R3.}},
     journal = {Publicacions matem\`atiques},
     pages = {431-466},
     publisher = {mathdoc},
     volume = {45},
     number = {2},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_2001_2001_1_a21/}
}