This article is cited in 2 papers

Ordinary Differential Equations

Invariant tori of the Duffing equation

Yu. N. Bibikov, M. V. Pirogov

Saint Petersburg State University

UDC: 517.925.4

Received: 17.02.2005

 English version: Differential Equations, 2006, 42:8, 1069–1075

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