%0 Journal Article %A Basto Gonçalves, J. %T Invariant manifolds of a differentiable vector field %J Portugaliae mathematica %D 1993 %P 497-505 %V 50 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1993__50_4_115101/ %G en %F PORMA_1993__50_4_115101