TY  - JOUR
AU  - A. I. Polak
TI  - On sufficient and necessary conditions for complete approximative solvability of equations of a very general nature
JO  - Doklady Akademii Nauk
PY  - 1957
SP  - 587
EP  - 590
VL  - 112
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1957_112_4_a5/
LA  - ru
ID  - DAN_1957_112_4_a5
ER  -