TY  - JOUR
AU  - P. A. Borodin
TI  - Convexity of $2$-Chebyshev sets in Hilbert space
JO  - Vestnik Moskovskogo universiteta. Matematika, mehanika
PY  - 2008
SP  - 16
EP  - 19
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VMUMM_2008_3_a3/
LA  - ru
ID  - VMUMM_2008_3_a3
ER  -