%0 Journal Article %A A. B. Doktorovich %T The ``betweenness'' relation and support sets %J Doklady Akademii Nauk %D 1997 %P 748-750 %V 354 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1997_354_6_a7/ %G ru %F DAN_1997_354_6_a7