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@article{MS2_1963__12_165831, author = {Helge Tverberg}, title = {On the {Permanent} of a {Bistochastik} {Matrix.}}, journal = {Mathematica Scandinavica}, pages = {25--35}, publisher = {mathdoc}, volume = {12}, year = {1963}, zbl = {0117.01502}, url = {http://geodesic.mathdoc.fr/item/MS2_1963__12_165831/} }
Helge Tverberg. On the Permanent of a Bistochastik Matrix.. Mathematica Scandinavica, Tome 12 (1963), pp. 25-35. http://geodesic.mathdoc.fr/item/MS2_1963__12_165831/