%0 Journal Article %A V. L. Levin %A A. A. Milyutin %T The problem of mass transfer with a~discontinuous cost function and a~mass statement of the duality problem for convex extremal problems %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1979 %P 1-78 %V 34 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1979_34_3_a0/ %G en %F RM_1979_34_3_a0