TY  - JOUR
AU  - V. G. Maz'ya
TI  - On a~degenerating problem with directional derivative
JO  - Sbornik. Mathematics
PY  - 1972
SP  - 429
EP  - 469
VL  - 16
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1972_16_3_a7/
LA  - en
ID  - SM_1972_16_3_a7
ER  -