%0 Journal Article %A L. A. Movsesyan %T An invariant transformation of the equations for plane steady motion of a perfect gas %J Doklady Akademii Nauk %D 1968 %P 305-308 %V 181 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1968_181_2_a12/ %G ru %F DAN_1968_181_2_a12