@article{RMI_1992_1992_1_a12,
     author = {Lu, Guozhen},
     title = {Desigualdades ponderadas de {Poincar\'e} y {Sobolev} para campos vectoriales que satisfacen la condici\'on de {H\"ormander} y aplicaciones.},
     journal = {Revista matem\'atica iberoamericana},
     pages = {367-439},
     publisher = {mathdoc},
     volume = {8},
     number = {3},
     year = {1992},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RMI_1992_1992_1_a12/}
}