HERWIG
HAUSER
Researcher in the period 1995-1995
![Foto de HERWIG](/img/nophoto.png)
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Centre National de la Recherche Scientifique
París, FranciaPublications in collaboration with researchers from Centre National de la Recherche Scientifique (1)
1999
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The reduced bautin index of planar vector fields
Duke Mathematical Journal, Vol. 100, Núm. 3, pp. 425-445