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JOURNALS // Differentsial'nye Uravneniya // Archive

Differ. Uravn., 1969 Volume 5, Number 11, Pages 1984–1989 (Mi de841)

The existence of families of periodic solutions of a system of $n$ second order differential equations in the resonance case

I. A. Pasynkova

Leningrad State University

UDC: 517.925.32

Received: 07.09.1968



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