TY  - JOUR
AU  - V. I. Gorbachuk
AU  - M. L. Gorbachuk
TI  - Operator approach to approximation problems
JO  - Algebra i analiz
PY  - 1997
SP  - 90
EP  - 108
VL  - 9
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AA_1997_9_6_a3/
LA  - ru
ID  - AA_1997_9_6_a3
ER  -