%0 Journal Article
%A P. A. Borodin
%T Convexity of $2$-Chebyshev sets in Hilbert space
%J Vestnik Moskovskogo universiteta. Matematika, mehanika
%D 2008
%P 16-19
%N 3
%U http://geodesic.mathdoc.fr/item/VMUMM_2008_3_a3/
%G ru
%F VMUMM_2008_3_a3