%0 Journal Article %A U. G. Pirumov %T Qualitative analysis of some evolutionary problems of gas dynamics %J Matematičeskoe modelirovanie %D 1999 %P 5-32 %V 11 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM_1999_11_2_a1/ %G ru %F MM_1999_11_2_a1