Diacu, F.Selaru, Dan2010-02-192010-02-1919972010-02-19http://hdl.handle.net/1828/2251We consider the Glydén problem - a perturbation of the Kepler problem via an explicit function of time. For certain general classes of planar periodic perturbations, after proving a Poincaré-Melnikov-type criterion, we find a manifold of orbits in which the dynamics is given by the shift automorphism on the set of bi-finite sequences with infinitely many symbols.entechnical reports (mathematics and statistics)Technical ReportDepartment of Mathematics and Statistics