TY  - JOUR
AU  - È. R. Rozendorn
TI  - The isolated singular point on a surface with regular metric and negative curvature
JO  - Doklady Akademii Nauk
PY  - 1963
SP  - 780
EP  - 783
VL  - 149
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1963_149_4_a6/
LA  - ru
ID  - DAN_1963_149_4_a6
ER  -