%0 Journal Article %A E. V. Mamontov %T Invariant solutions to dynamic of polytropic gas generated by threedimensional Lie subalgebras %J Sibirskie èlektronnye matematičeskie izvestiâ %D 2009 %P 53-109 %V 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/SEMR_2009_6_a4/ %G ru %F SEMR_2009_6_a4