TY  - JOUR
AU  - Alan Weinstein
AU  - Christpher B. Croke
TI  - Closed Curves on Convex Hypersurfaces and Periods of Nonlinear Oscillations.
JO  - Inventiones mathematicae
PY  - 1981
SP  - 199
EP  - 202
VL  - 64
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1981__64_142820/
ID  - IM_1981__64_142820
ER  -