Ordinary Differential Equations

Strong isochronism of the center of dynamical systems with second-degree polynomials

V. V. Amel'kin, Ching Zan Dang

Belarusian State University, Minsk

UDC: 517.925

Received: 23.04.1992

 English version: Differential Equations, 1993, 29:5, 629–632

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