TY  - JOUR
AU  - L. P. Vlasov
TI  - A characterization of generalized and classical best approximation elements relative to spaces of finite codimension
JO  - Matematičeskie zametki
PY  - 1980
SP  - 707
EP  - 716
VL  - 28
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1980_28_5_a6/
LA  - ru
ID  - MZM_1980_28_5_a6
ER  -