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 6-8 săpt.
Qualitative Theory of Planar Differential Systems Universitext Autor Freddy Dumortier et al. 6 sep 2006 Paperback Preț: 482.61 lei 567.77 lei 6-8 săpt. -15%