@article{EXMATH_2001_2001_1_a21,
     author = {Bravo, Jos\'e L. and Fern\'andez, Manuel and Tineo, Antonio},
     title = {El conjunto de ecuaciones diferenciales de primer orden con soluciones peri\'odicas o acotadas.},
     journal = {Extracta mathematicae},
     pages = {293-295},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_2001_2001_1_a21/}
}