@article{DA_2009_16_6_a6,
     author = {T. I. Fedoryaeva},
     title = {Exact upper estimates of the number of different balls of given radius for the graphs with fixed number of vertexes and diameter},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {74--92},
     publisher = {mathdoc},
     volume = {16},
     number = {6},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2009_16_6_a6/}
}