TY  - JOUR
AU  - S. V. Buyalo
TI  - An extremal theorem of Riemannian geometry
JO  - Matematičeskie zametki
PY  - 1976
SP  - 795
EP  - 804
VL  - 19
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1976_19_5_a14/
LA  - ru
ID  - MZM_1976_19_5_a14
ER  -