Periodic solutions of a differential equation with polynomial right-hand side
English version (Springer): Ukrainian Mathematical Journal 33 (1981), no. 1, pp 49-51.
Citation Example: Zavalykut G. D. Periodic solutions of a differential equation with polynomial right-hand side // Ukr. Mat. Zh. - 1981. - 33, № 1. - pp. 60–63.
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