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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 31, No. 5, pp. 576–582, September–October, 1979.
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Prikarpatskii, A.K. A system of nonlinear differential equations with an exact solution. Ukr Math J 31, 457–462 (1979). https://doi.org/10.1007/BF01126879
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DOI: https://doi.org/10.1007/BF01126879