%0 Journal Article %A S. V. Konyagin %T A remark on renormings of nonreflexive spaces and the existence of a Chebyshev center %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1988 %P 81-82 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1988_2_a21/ %G ru %F VMUMM_1988_2_a21