Ordinary Differential Equations

Topological classification of a quadratic system with a four-fold singular point

N. I. Vulpe, I. V. Nikolaev

Institute of Mathematics and Computer Science, Academy of Sciences of Moldova

UDC: 517.925

Received: 25.05.1992

 English version: Differential Equations, 1993, 29:10, 1449–1453

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