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@article{MZM_1970_7_4_a2, author = {B. A. Sevast'yanov}, title = {Necessary condition for the regularity of branching processes}, journal = {Matemati\v{c}eskie zametki}, pages = {389--396}, publisher = {mathdoc}, volume = {7}, number = {4}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1970_7_4_a2/} }
B. A. Sevast'yanov. Necessary condition for the regularity of branching processes. Matematičeskie zametki, Tome 7 (1970) no. 4, pp. 389-396. http://geodesic.mathdoc.fr/item/MZM_1970_7_4_a2/