TY  - JOUR
AU  - A. I. Gryuntal'
TI  - The existence of convex spherical metrics, all closed nonselfintersecting geodesics of which are hyperbolic
JO  - Izvestiya. Mathematics 
PY  - 1980
SP  - 1
EP  - 16
VL  - 14
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1980_14_1_a0/
LA  - en
ID  - IM2_1980_14_1_a0
ER  -