%0 Journal Article %A A. F. Sidorov %T Investigation of the singularities of unsteady conic gas flows %J Doklady Akademii Nauk %D 1994 %P 732-735 %V 335 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1994_335_6_a17/ %G ru %F DAN_1994_335_6_a17