TY  - JOUR
AU  - Francesco Mercuri
TI  - The Critical Points Theory for the Closed Geodesics Problem.
JO  - Mathematische Zeitschrift
PY  - 1977
SP  - 231
EP  - 246
VL  - 156
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1977__156_172584/
ID  - MZ_1977__156_172584
ER  -