%0 Journal Article
%A D. Pavlica
%A L. Zajícek
%T On the Directions of Segments and r-Dimensional Balls on a Convex Surface
%J Journal of convex analysis
%D 2007
%P 149-167
%V 14
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JCA_2007_14_1_JCA_2007_14_1_a11/
%F JCA_2007_14_1_JCA_2007_14_1_a11