TY  - JOUR
AU  - E. G. Gol'shtein
TI  - Problems of best approximation by elements of a convex set and some properties of the support functionals
JO  - Doklady Akademii Nauk
PY  - 1967
SP  - 995
EP  - 998
VL  - 173
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1967_173_5_a1/
LA  - ru
ID  - DAN_1967_173_5_a1
ER  -