TY  - JOUR
AU  - N. A. Gusevskii
TI  - On the fundamental group of a manifold of negative curvature
JO  - Doklady Akademii Nauk
PY  - 1983
SP  - 777
EP  - 781
VL  - 268
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1983_268_4_a0/
LA  - ru
ID  - DAN_1983_268_4_a0
ER  -