TY  - JOUR
AU  - E. V. Shikin
TI  - Isometric imbeddings in $E^3$ of noncompact domains of nonpositive curvature
JO  - Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara
PY  - 1975
SP  - 249
EP  - 266
VL  - 7
UR  - http://geodesic.mathdoc.fr/item/INTG_1975_7_a14/
LA  - ru
ID  - INTG_1975_7_a14
ER  -