Abstract
Sufficient conditions for the existence of periodic solutions to a type of nonautonomous differential-iterative equations are given.
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References
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Ge, W., Liu, Z. & Yu, Y. On the periodic solutions of a type of differential-iterative equations. Chin.Sci.Bull. 43, 204–206 (1998). https://doi.org/10.1007/BF02898911
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DOI: https://doi.org/10.1007/BF02898911