Document Zbl 0218.34005

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Acta Fac. Rer. Nat. Univ. Comenianae, Math. 17, 27-36 (1967).

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scan of Zbl 0218.34005

34A25	Analytical theory of ordinary differential equations: series, transformations, transforms, operational calculus, etc.
34A30	Linear ordinary differential equations and systems
34C10	Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations

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