%0 Journal Article %A M. H. Brenerman %T The Riemann problem on a~countable set of convex contours that are condensed toward a~continuum %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1980 %P 67-69 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1980_12_a11/ %G ru %F IVM_1980_12_a11