TY - JOUR AU - Zeng, Chongchun TI - Persistence of invariant manifolds for perturbations of semiflows with symmetry JO - Electronic Journal of Differential Equations PY - 1999 VL - 1999 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EJDE_1999__1999__a126/ LA - en ID - EJDE_1999__1999__a126 ER -