%0 Journal Article
%A V. I. Arnol'd
%T Singularities of systems of rays
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1983
%P 87-176
%V 38
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1983_38_2_a1/
%G en
%F RM_1983_38_2_a1