@article{TVP_1973_18_4_a18,
     author = {G. V. Proskurin},
     title = {On the distribution of the number of vertices in strata of a random mapping},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {846--852},
     publisher = {mathdoc},
     volume = {18},
     number = {4},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_1973_18_4_a18/}
}