@article{DM_2004_16_1_a1,
     author = {B. A. Sevast'yanov},
     title = {Some classes of random mappings of finite sets, and nonhomogeneous branching processes},
     journal = {Diskretnaya Matematika},
     pages = {9--13},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2004_16_1_a1/}
}