%0 Journal Article %A A. L. Garkavi %T On the Chebyshev center and convex hull of a~set %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1964 %V 19 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1964_19_6_a11/ %G ru %F RM_1964_19_6_a11