%0 Journal Article %A P. G. Grigor'ev %T On the Orthomassivity of the Set of Characteristic Functions of Convex Sets %J Matematičeskie zametki %D 2004 %P 151-155 %V 75 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2004_75_1_a13/ %G ru %F MZM_2004_75_1_a13