TY  - BOOK
AU  - Roussarie, Robert H
TI  - Bifurcation of planar vector fields and Hilbert's sixteenth problem
SN  - 9783764359003
U1  - 515.35 ROU 
PY  - 1998///
CY  - Boston, MA
PB  - Birkhauser
KW  - Bifurcation theory
ER  -