%0 Journal Article %A D. P. Mil'man %T Facial characterization of convex sets; extremal elements %J Trudy Moskovskogo matematičeskogo obŝestva %D 1970 %P 63-126 %V 22 %I mathdoc %U http://geodesic.mathdoc.fr/item/MMO_1970_22_a1/ %G ru %F MMO_1970_22_a1