TY  - JOUR
AU  - E. V. Shikin
TI  - On regular embedding integrally in $R^3$ of metrics of class $C^4$ of negative curvature
JO  - Matematičeskie zametki
PY  - 1973
SP  - 261
EP  - 266
VL  - 14
IS  - 2
UR  - http://geodesic.mathdoc.fr/item/MZM_1973_14_2_a11/
LA  - ru
ID  - MZM_1973_14_2_a11
ER  -