We establish sufficient conditions for the existence of periodic solutions of a system of nonlinear functional-differential equations with small parameter and linear deviations of the argument and study the properties of these solutions.
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Translated from Neliniini Kolyvannya, Vol. 17, No. 3, pp. 332–340, July–September, 2014.
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Denysenko, N.L. Properties of Continuous Periodic Solutions of Systems of Functional-Differential Equations with Small Parameter. J Math Sci 212, 254–263 (2016). https://doi.org/10.1007/s10958-015-2662-4
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DOI: https://doi.org/10.1007/s10958-015-2662-4