Bifurcations of Planar Vector Fields: Proceedings of a Meeting held in Luminy, France, Sept. 18-22, 1989 Lecture Notes in Mathematics, nr. 1455 Editat de Jean-Pierre Francoise et al. 12 dec 1990 Paperback Preț: 322.16 lei 43-57 zile
Bifurcations of Planar Vector Fields: Nilpotent Singularities and Abelian Integrals Lecture Notes in Mathematics, nr. 1480 Autor Freddy Dumortier et al. 9 oct 1991 Paperback Preț: 465.97 lei 43-57 zile