Nonlinear Analysis · 1992 · 13 citations · 6 references
Natural SciencesMathematicsPhysicsDifferential EquationsDynamical SystemsMathematical PhysicsInitial Value ProblemsPerturbation MethodsPerturbation TheorySingular Perturbation TheoryStability TheorySystems Of Differential EquationsSingular Perturbation AnalysisSingular Perturbations In Ordinary Differential EquationsSingularly Perturbed Initial Value Problems
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Ordinary Differential Equations
D. S., L. S. Pontryagin · Mathematics of Computation · 1963 · 289 citations