%0 Journal Article %A I. G. Salekhova %T The solution of the Riemann problem in the case of a countable set of contours in certain special cases %J Trudy seminara po kraevym zadačam %D 1973 %P 112-121 %V 10 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/KUKZ_1973_10_10_a13/ %G ru %F KUKZ_1973_10_10_a13