TY  - JOUR
AU  - B. V. Simonov
AU  - V. A. Ivanyuk
AU  - I. E. Simonova
TI  - Existence of best approximation elements in the spaces $L_{\varphi_+\varphi_-}$
JO  - Contemporary Mathematics and Its Applications
PY  - 2015
SP  - 112
EP  - 131
VL  - 96
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMA_2015_96_a7/
LA  - ru
ID  - CMA_2015_96_a7
ER  -