%0 Journal Article
%A V. E. Shemarulin
%T Higher symmetries and laws of conservation of an equation of one-dimensional planar isentropic flows of a~polytropic gas
%J Matematičeskie zametki
%D 1990
%P 138-140
%V 47
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1990_47_3_a20/
%G ru
%F MZM_1990_47_3_a20