@article{MZM_1967_1_1_a6,
     author = {B. A. Sevast'yanov},
     title = {On the regularity of branching processes},
     journal = {Matemati\v{c}eskie zametki},
     pages = {53--62},
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1967_1_1_a6/}
}