TY  - JOUR
AU  - V. A. Kondrat'ev
AU  - S. D. Èidel'man
TI  - On conditions on the boundary surface in the theory of elliptic boundary value problems
JO  - Doklady Akademii Nauk
PY  - 1979
SP  - 812
EP  - 815
VL  - 246
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1979_246_4_a11/
LA  - ru
ID  - DAN_1979_246_4_a11
ER  -