Acta Mathematica · 1950 · 73 citations · 2 references
Natural SciencesMathematicsDifferential EquationsDynamical SystemsContinuous Dynamical SystemsInitial Value ProblemsPartial Differential EquationsPerturbation MethodsPerturbation TheorySystems Of Differential EquationsNonlinear StabilityPerturbation Of Initial Value ProblemsPerturbation Of Nonlinear Differential EquationsPerturbed Differential-algebraic EquationsSingular Perturbation AnalysisSingularly Perturbed Initial Value ProblemsStability Of Continuous Systems
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Singular perturbations of non-linear oscillations
Kurt Friedrichs, Wolfgang Wasow · Duke Mathematical Journal · 1946 · 86 citations