Quantity of periodic solutions for a system of nonlinear ordinary differential equations with periodic coefficients

DOI10.1007/BF01085342zbMath0206.38001MaRDI QIDQ2542811

I. G. Kozubovskaya

Publication date: 1969

Published in: Ukrainian Mathematical Journal (Search for Journal in Brave)

Mathematics Subject Classification ID

Periodic solutions to ordinary differential equations (34C25) Nonlinear ordinary differential equations and systems (34A34)

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