TY  - DATA
AU  - Jean-Pierre Francoise, Robert Roussarie
TI  - Bifurcations of Planar Vector Fields
SN  - 9783540467229
PY  - 1990///
PB  - Springer Berlin Heidelberg
KW  - Mathematics and Statistics
UR  - https://doi.org/10.1007/BFb0085387
ER  -