TY  - JOUR
AU  - V. V. Arestov
TI  - Best approximation of unbounded by bounded operators, and allied problems
JO  - Matematičeskie zametki
PY  - 1986
SP  - 269
EP  - 285
VL  - 40
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1986_40_2_a11/
LA  - ru
ID  - MZM_1986_40_2_a11
ER  -