TY  - JOUR
AU  - E. G. Gol'shtein
TI  - A general formulation of the best approximation problem
JO  - Doklady Akademii Nauk
PY  - 1962
SP  - 21
EP  - 22
VL  - 144
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1962_144_1_a4/
LA  - ru
ID  - DAN_1962_144_1_a4
ER  -