TY  - JOUR
AU  - Ya. A. Roitberg
AU  - Z. G. Sheftel
TI  - General boundary-value problems for elliptic equations with discontinuous coefficients
JO  - Doklady Akademii Nauk
PY  - 1963
SP  - 1034
EP  - 1037
VL  - 148
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1963_148_5_a10/
LA  - ru
ID  - DAN_1963_148_5_a10
ER  -