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Kritische Frequenzen von Systemen, die in bezug auf die Zeitumkehr invariant sind. (Russian) Zbl 0284.34048


MSC:

34C25 Periodic solutions to ordinary differential equations
34D05 Asymptotic properties of solutions to ordinary differential equations
34A25 Analytical theory of ordinary differential equations: series, transformations, transforms, operational calculus, etc.
34A30 Linear ordinary differential equations and systems
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