%0 Journal Article %A L. I. Chibrikova %T On a singular case of the Riemann problem on a nonbounded contour.~I %J Trudy seminara po kraevym zadačam %D 1978 %P 139-167 %V 15 %N 15 %I mathdoc %U http://geodesic.mathdoc.fr/item/KUKZ_1978_15_15_a18/ %G ru %F KUKZ_1978_15_15_a18