Bifurcations of planar vector fields: nilpotent singularities and abelian integrals

Bifurcations of planar vector fields: nilpotent singularities and abelian integrals Roussarie, F., Dumortier creator Roussarie, R. Zoladek, Sotomayor, H. text Berlin Springer-Verlag 1991 monographic 226p, 22 cm. 512.55, D, um 20251203091555.0