This article is cited in 1 paper

Ordinary Differential Equations

Existence of limit cycles of two-dimensional autonomous systems of differential equations

V. V. Amel'kin

V. I. Lenin Belorusskii State University

UDC: 517.925.42

Received: 08.06.1987

 English version: Differential Equations, 1988, 24:12, 1353–1357

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