TY  - JOUR
AU  - A. V. Bitsadze
TI  - On elliptical systems of second order partial differential equations
JO  - Doklady Akademii Nauk
PY  - 1957
SP  - 983
EP  - 986
VL  - 112
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1957_112_6_a0/
LA  - ru
ID  - DAN_1957_112_6_a0
ER  -