%0 Journal Article %A D. Repovš %A P. V. Semenov %T On the Relation between the Nonconvexity of a Set and the Nonconvexity of Its $\varepsilon$-Neighborhoods %J Matematičeskie zametki %D 2001 %P 246-259 %V 70 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2001_70_2_a8/ %G ru %F MZM_2001_70_2_a8