%0 Journal Article
%A V. D. Sedykh
%T On the topology of wave fronts in spaces of low dimension
%J Izvestiya. Mathematics 
%D 2012
%P 375-418
%V 76
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_2012_76_2_a7/
%G en
%F IM2_2012_76_2_a7