%0 Journal Article %A Beneš, Viktor %T Extremal and optimal solutions in the transshipment problem %J Commentationes Mathematicae Universitatis Carolinae %D 1992 %P 97-112 %V 33 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1992__33_1_a11/ %G en %F CMUC_1992__33_1_a11