TY  - JOUR
AU  - V. A. Kozlov
TI  - The strong zero theorem for an elliptic boundary value problem in
JO  - Doklady Akademii Nauk
PY  - 1989
SP  - 1299
EP  - 1301
VL  - 309
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1989_309_6_a3/
LA  - ru
ID  - DAN_1989_309_6_a3
ER  -