TY  - JOUR
AU  - Andrzej Szulkin
TI  - An Index Theory and Existence of Multiple Brake Orbits for Star-Shaped Hamiltonian Systems
JO  - Mathematische Annalen
PY  - 1989
SP  - 241
EP  - 256
VL  - 283
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1989__283_1_164506/
ID  - MAN_1989__283_1_164506
ER  -