TY  - JOUR
AU  - I. Ya. Roitberg
TI  - Elliptic boundary value problems for general systems of equations
JO  - Doklady Akademii Nauk
PY  - 1997
SP  - 25
EP  - 29
VL  - 354
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1997_354_1_a5/
LA  - ru
ID  - DAN_1997_354_1_a5
ER  -