@article{DA_2006_13_4_a4,
     author = {V. N. Potapov},
     title = {A lower bound for the number of transitive perfect codes},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {49--59},
     publisher = {mathdoc},
     volume = {13},
     number = {4},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2006_13_4_a4/}
}