TY  - JOUR
AU  - Ya. A. Roitberg
TI  - A homeomorphism theorem for general elliptic boundary value problems with boundary conditions that are not the normal ones
JO  - Doklady Akademii Nauk
PY  - 1970
SP  - 1228
EP  - 1231
VL  - 191
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1970_191_6_a7/
LA  - ru
ID  - DAN_1970_191_6_a7
ER  -