1999
Physics , Thermodynamics and Statistical MechanicsSymbolic dynamics for the Henon-Heiles Hamiltonian on the critical level
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Physics , Mechanics: Nonlinear dynamics and chaosSymmetry and perturbation theory in nonlinear dynamics
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Symmetry and Perturbation Theory in Nonlinear Dynamics
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MathematicsTangency, flow invariance for differential equations, and optimization problems
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