TY  - JOUR
AU  - Ya. A. Roitberg
TI  - Homeomorphism theorems and a~Green's formula for general elliptic boundary problems with nonnormal boundary conditions
JO  - Sbornik. Mathematics
PY  - 1970
SP  - 177
EP  - 212
VL  - 12
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1970_12_2_a2/
LA  - en
ID  - SM_1970_12_2_a2
ER  -