@article{RM_1979_34_3_a0,
     author = {V. L. Levin and A. A. Milyutin},
     title = {The problem of mass transfer with a~discontinuous cost function and a~mass statement of the duality problem for convex extremal problems},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1--78},
     publisher = {mathdoc},
     volume = {34},
     number = {3},
     year = {1979},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1979_34_3_a0/}
}