TY  - JOUR
AU  - A. A. Novruzov
TI  - On a necessary and sufficient condition for regularity of boundary points for quasi-linear elliptic equations of second order
JO  - Doklady Akademii Nauk
PY  - 1977
SP  - 547
EP  - 550
VL  - 233
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1977_233_4_a9/
LA  - ru
ID  - DAN_1977_233_4_a9
ER  -