%0 Journal Article %A I. P. Chukhrov %T Maximal cardinality of the shadow of an antichain %J Diskretnaya Matematika %D 1989 %P 78-85 %V 1 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DM_1989_1_4_a7/ %G ru %F DM_1989_1_4_a7