1998 · 88 citations · 0 references
Natural SciencesMathematicsDifferential EquationsDynamical SystemsMathematical PhysicsBoundary ConditionsBoundary-value ProblemsNumerical AnalysisPartial Differential EquationsPerturbation TheoryWeak FormulationPerturbation Theory Of OperatorsPerturbed Differential-algebraic EquationsSingular Perturbation AnalysisSingularly Perturbed Boundary Value ProblemsSingularly Perturbed Initial Value Problems