%0 Journal Article %A K. P. Surovikhin %T Group classification of the equations describing one-dimensional unsteady motion of a gas %J Doklady Akademii Nauk %D 1964 %P 533-536 %V 156 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_156_3_a13/ %G ru %F DAN_1964_156_3_a13