TY  - JOUR
AU  - G. M. Vainikko
TI  - Compact approximation of operators and approximate solution of operator equations
JO  - Doklady Akademii Nauk
PY  - 1969
SP  - 237
EP  - 240
VL  - 189
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1969_189_2_a2/
LA  - ru
ID  - DAN_1969_189_2_a2
ER  -