%0 Journal Article
%A Micha Sharir
%A D. Leven
%T On the Number of Critical Free Contacts of a Convex Polygonal Object Moving in Two-Dimensional Polygonal Space.
%J Discrete & computational geometry
%D 1987
%P 255-270
%V 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DCG_1987__2_131022/
%F DCG_1987__2_131022