%0 Journal Article
%A A. A. Uspenskii
%A P. D. Lebedev
%T On the set of limit values of local diffeomorphisms in wavefront evolution
%J Trudy Instituta matematiki i mehaniki
%D 2010
%P 171-185
%V 16
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TIMM_2010_16_1_a13/
%G ru
%F TIMM_2010_16_1_a13