TY  - JOUR
AU  - Ya. A. Roitberg
AU  - Z. G. Sheftel
TI  - Boundary value problems for general elliptic systems with strong degeneration
JO  - Differencialʹnye uravneniâ
PY  - 1987
SP  - 292
EP  - 300
VL  - 23
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1987_23_2_a12/
LA  - ru
ID  - DE_1987_23_2_a12
ER  -