@article{IM2_2017_81_1_a4,
     author = {N. Seifter and V. I. Trofimov},
     title = {Big subsets with small boundaries in a~graph with a~vertex-transitive group of automorphisms},
     journal = {Izvestiya. Mathematics },
     pages = {137--155},
     publisher = {mathdoc},
     volume = {81},
     number = {1},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2017_81_1_a4/}
}