This article is cited in 2 papers

Ordinary Differential Equations

A generalized normal form and formal equivalence of two-dimensional systems with quadratic zero approximation: III

V. V. Basov

Saint Petersburg State University

UDC: 517.925.5

Received: 16.06.2003

 English version: Differential Equations, 2006, 42:3, 327–339

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