%0 Journal Article %A A. I. Vasil'ev %T Defining a~metric in a~linear space by means of a~family of subsets %J Matematičeskie zametki %D 1976 %P 237-246 %V 19 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1976_19_2_a8/ %G ru %F MZM_1976_19_2_a8