%0 Journal Article %A M. K. Kravtsov %T Polyhedral aspects of multi-index transportation problems with %J Doklady Akademii Nauk %D 1990 %P 1298-1302 %V 315 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1990_315_6_a2/ %G ru %F DAN_1990_315_6_a2