%0 Journal Article
%A N. Megiddo
%T On the Ball Spanned by Balls.
%J Discrete & computational geometry
%D 1989
%P 605-610
%V 4
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DCG_1989__4_6_131099/
%F DCG_1989__4_6_131099