TY  - JOUR
AU  - N. V. Efimov
AU  - È. G. Poznyak
TI  - Some transformations of the fundamental equations in the theory of surfaces
JO  - Doklady Akademii Nauk
PY  - 1961
SP  - 25
EP  - 27
VL  - 137
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1961_137_1_a4/
LA  - ru
ID  - DAN_1961_137_1_a4
ER  -