%0 Journal Article
%A Christer O. Kiselman
%T Smoothness of vector sums of plane convex sets.
%J Mathematica Scandinavica
%D 1987
%P 239-252
%V 60
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MS2_1987__60_167020/
%F MS2_1987__60_167020