@article{DA_1997_4_3_a2,
     author = {A. A. Sapozhenko},
     title = {On the number of connected sets with given cardinality of a~neighborhood in a~graph},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {18--34},
     publisher = {mathdoc},
     volume = {4},
     number = {3},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_1997_4_3_a2/}
}