TY  - JOUR
AU  - A. F. Shapkin
TI  - On nondetermined methods of solving Poisson’s equation optimal on function classes
JO  - Doklady Akademii Nauk
PY  - 1969
SP  - 744
EP  - 747
VL  - 189
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1969_189_4_a13/
LA  - ru
ID  - DAN_1969_189_4_a13
ER  -