G. Ya. Karasik, “On the existence of periodic solutions of a system of differential equations with retarded argument”, Sibirsk. Mat. Zh., 1961, Volume 2, Number 4,Pages <nobr>551

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Sibirsk. Mat. Zh., 1961 Volume 2, Number 4, Pages 551–555 (Mi smj4752)

On the existence of periodic solutions of a system of differential equations with retarded argument

G. Ya. Karasik

Received: 12.09.1959

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