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Basic results on oscillation for differential equations with deviating arguments. (English) Zbl 0453.34055

MSC:
34K99 Functional-differential equations (including equations with delayed, advanced or state-dependent argument)
34E05 Asymptotic expansions of solutions to ordinary differential equations
34C10 Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations
34K25 Asymptotic theory of functional-differential equations
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