Geodesic
On the equivalence of various formulations of the transportation problem
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Tome 17 (1962) no. 3 
J. V. Romanovsky. On the equivalence of various formulations of the transportation problem. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Tome 17 (1962) no. 3. http://geodesic.mathdoc.fr/item/RM_1962_17_3_a9/
@article{RM_1962_17_3_a9,
     author = {J. V. Romanovsky},
     title = {On the equivalence of various formulations of the transportation problem},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1962},
     volume = {17},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1962_17_3_a9/}
}
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