TY  - JOUR
AU  - F. TAKENS
TI  - Hamiltonian Systems: Generic Properties of Closed Orbits and Local Perturbations.
JO  - Mathematische Annalen
PY  - 1970
SP  - 304
EP  - 312
VL  - 188
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1970__188_162054/
ID  - MAN_1970__188_162054
ER  -