TY  - JOUR
AU  - È. M. Saak
TI  - On the theory of multidimensional elliptic systems of first order
JO  - Doklady Akademii Nauk
PY  - 1975
SP  - 43
EP  - 46
VL  - 222
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1975_222_1_a9/
LA  - ru
ID  - DAN_1975_222_1_a9
ER  -