TY  - JOUR
AU  - Terracini, Susanna
TI  - Multiplicity of periodic solution with prescribed energy to singular dynamical systems
JO  - Annales de l'I.H.P. Analyse non linéaire
PY  - 1992
SP  - 597
EP  - 641
VL  - 9
IS  - 6
PB  - Gauthier-Villars
UR  - http://www.numdam.org/item/AIHPC_1992__9_6_597_0/
LA  - en
ID  - AIHPC_1992__9_6_597_0
ER  -