@article{DM_1990_2_3_a7,
     author = {V. S. Shevelev},
     title = {Sums of subpermanents of linear hulls of permutation matrices},
     journal = {Diskretnaya Matematika},
     pages = {65--80},
     publisher = {mathdoc},
     volume = {2},
     number = {3},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1990_2_3_a7/}
}