TY  - JOUR
AU  - M. I. Vishik
AU  - V. V. Grushin
TI  - Elliptic boundary value problems that are degenerate on a submanifold of the boundary
JO  - Doklady Akademii Nauk
PY  - 1970
SP  - 255
EP  - 258
VL  - 190
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1970_190_2_a0/
LA  - ru
ID  - DAN_1970_190_2_a0
ER  -