%0 Journal Article
%A A. V. Borovskikh
%T Group classification of the eikonal equation for

%J Sbornik. Mathematics
%D 2004
%P 479-520
%V 195
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_2004_195_4_a1/
%G en
%F SM_2004_195_4_a1