%0 Journal Article
%A Victor Klee
%T Dispersed Chebyshev Sets and Coverings by Balls.
%J Mathematische Annalen
%D 1981
%P 251-260
%V 257
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1981__257_163555/
%F MAN_1981__257_163555