%0 Journal Article %A P. V. Roldugin %T Cardinality of subsets of the residue group with nonunit differences of elements %J Diskretnaya Matematika %D 2016 %P 111-125 %V 28 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DM_2016_28_3_a7/ %G ru %F DM_2016_28_3_a7