@article{PDMA_2015_8_a47,
     author = {T. I. Fedoryaeva},
     title = {On the diversity of balls in a~graph of a~given diameter},
     journal = {Prikladnaya Diskretnaya Matematika. Supplement},
     pages = {127--128},
     publisher = {mathdoc},
     number = {8},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDMA_2015_8_a47/}
}