NONLINEAR PHENOMENA IN COMPLEX SYSTEMS
An Interdisciplinary Journal

2001, Volume 4, Number 2, pp.116-122

The Isochronicity Conditions for Some Cubic Systems
Valery G. Romanovski, Marko Robnik, and Olga I. Romanovskaya

We obtain the necessary and sufficient conditions of isochronicity (linearisability) of centers of two eight-parametric cubic systems of differential equations.
Key words: isochronicity, centers, linear normal forms

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