@article{DM_2012_24_4_a11,
     author = {E. B. Titova and V. N. Shevchenko},
     title = {On the minors of the matrix of constraints of multi-index transportation problems},
     journal = {Diskretnaya Matematika},
     pages = {147--157},
     publisher = {mathdoc},
     volume = {24},
     number = {4},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2012_24_4_a11/}
}