Journal of Differential Equations · 1993 · 76 citations · 0 references
Natural SciencesMathematicsPhysicsDynamical SystemsMathematical PhysicsTheoretical PhysicsCanonical TransformationsDissipative SystemsHamiltonian DynamicsHamiltonian MechanicsHamiltonian SystemsIntegrable SystemsHamiltonian Normal FormsPeriodic Orbits In Hamiltonian SystemsPeriodic Solutions Of Differential Equations