%0 Journal Article %A N. Seifter %A V. I. Trofimov %T Big subsets with small boundaries in a~graph with a~vertex-transitive group of automorphisms %J Izvestiya. Mathematics %D 2017 %P 137-155 %V 81 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_2017_81_1_a4/ %G en %F IM2_2017_81_1_a4