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Original Russian Text © P.F. Samusenko, 2006, published in Differential’nye Uravneniya, 2006, Vol. 42, No. 6, pp. 756–763.
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Samusenko, P.F. Construction of periodic solutions of a nonlinear singularly perturbed system of differential equations with degeneration. Diff Equat 42, 805–813 (2006). https://doi.org/10.1134/S0012266106060048
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DOI: https://doi.org/10.1134/S0012266106060048