@article{DM_1993_5_3_a7,
     author = {E. E. Marenich},
     title = {A~combinatorial approach to the enumeration of doubly stochastic square matrices with nonnegative integer elements},
     journal = {Diskretnaya Matematika},
     pages = {90--101},
     publisher = {mathdoc},
     volume = {5},
     number = {3},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1993_5_3_a7/}
}