%0 Journal Article %A A. I. Utkin %T An investigation of supersonic flows by means of the Volterra integral %J Doklady Akademii Nauk %D 1957 %P 369-372 %V 116 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1957_116_3_a5/ %G ru %F DAN_1957_116_3_a5