TY - JOUR AU - Basto Gonçalves, J. TI - Invariant manifolds of a differentiable vector field JO - Portugaliae mathematica PY - 1993 SP - 497 EP - 505 VL - 50 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PORMA_1993__50_4_115101/ LA - en ID - PORMA_1993__50_4_115101 ER -