A. P. Sadovskii, “A solution for the problem of center and focus for certain systems of non-linear oscillations”, Differ. Uravn., 1978, Volume 14, Number 2,Pages <nobr>380

JOURNALS // Differentsial'nye Uravneniya // Archive

Differ. Uravn., 1978 Volume 14, Number 2, Pages 380–382 (Mi de3321)

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A solution for the problem of center and focus for certain systems of non-linear oscillations

A. P. Sadovskii

V. I. Lenin Belorusskii State University

UDC: 517.925.12

Received: 30.09.1976

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