TY  - JOUR
AU  - A. I. Achil'diev
TI  - The first and second boundary-value problems for elliptic equations which are degenerate at a finite number of interior points
JO  - Doklady Akademii Nauk
PY  - 1963
SP  - 13
EP  - 16
VL  - 152
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1963_152_1_a1/
LA  - ru
ID  - DAN_1963_152_1_a1
ER  -