@article{PDM_2011_13_a50,
     author = {V. M. Fomichev},
     title = {The improvement of exponent's estimates for primitive graphs},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {98--100},
     publisher = {mathdoc},
     number = {13},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2011_13_a50/}
}