@article{PM_1991_1991_1_a34,
     author = {Rybicki, Slawomir},
     title = {Aplicaciones de la caracter{\'\i}stica de {Euler} en teor{\'\i}a de la bifurcaci\'on.},
     journal = {Publicacions matem\`atiques},
     pages = {527-535},
     publisher = {mathdoc},
     volume = {35},
     number = {2},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_1991_1991_1_a34/}
}