@article{EXMATH_2002_2002_1_a0,
     author = {Guti\'errez, Carlos and Llibre, Jaume},
     title = {Integrabilidad darbouxiana para campos vectoriales polin\'omicos sobre la esfera de dos dimensiones.},
     journal = {Extracta mathematicae},
     pages = {289-301},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_2002_2002_1_a0/}
}