%0 Journal Article
%A V. E. Shemarulin
%T Higher symmetry algebra structure and local equivalences of Euler--Darboux equations
%J Doklady Akademii Nauk
%D 1993
%P 24-27
%V 330
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1993_330_1_a6/
%G ru
%F DAN_1993_330_1_a6