TY  - JOUR
AU  - Zhu Daxin
TI  - A geometric approach to a result of Benci and Giannoni for Hamiltonian systems with singular potentials.
JO  - Manuscripta mathematica
PY  - 1991
SP  - 405
EP  - 414
VL  - 72
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MM2_1991__72_1_155649/
ID  - MM2_1991__72_1_155649
ER  -