TY  - JOUR
AU  - M. M. Lavrent'ev
AU  - V. R. Kireitov
TI  - On a class of mappings of bisurfaces in three-dimensional space
JO  - Doklady Akademii Nauk
PY  - 1974
SP  - 259
EP  - 260
VL  - 216
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1974_216_2_a4/
LA  - ru
ID  - DAN_1974_216_2_a4
ER  -