TY  - JOUR
AU  - V. S. Matveev
AU  - P. Topalov
TI  - A metric on a sphere that is geodesically equivalent to itself a metric of constant curvature is a metric of constant curvature
JO  - Vestnik Moskovskogo universiteta. Matematika, mehanika
PY  - 1998
SP  - 53
EP  - 55
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VMUMM_1998_5_a10/
LA  - ru
ID  - VMUMM_1998_5_a10
ER  -