Vol. 1480. Dumortier, F.; Roussarie, R.; Sotomayor, J.; Zoladek, H.
Biburcations of Planar Vector Fields : Nilpotent Singularities and Abelian Integrals
QA372 B545 1991
Vol. 1480. Dumortier, F.; Roussarie, R.; Sotomayor, J.; Zoladek, H.
Biburcations of Planar Vector Fields : Nilpotent Singularities and Abelian Integrals
QA372 B545 1991