TY  - JOUR
AU  - S. V. Konyagin
TI  - Connectedness of sets in best approximation problems
JO  - Doklady Akademii Nauk
PY  - 1981
SP  - 20
EP  - 23
VL  - 261
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1981_261_1_a3/
LA  - ru
ID  - DAN_1981_261_1_a3
ER  -