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@article{MZM_1983_34_5_a11, author = {I. B. Kalugin}, title = {Branching processes and random mappings of finite sets}, journal = {Matemati\v{c}eskie zametki}, pages = {757--771}, publisher = {mathdoc}, volume = {34}, number = {5}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1983_34_5_a11/} }
I. B. Kalugin. Branching processes and random mappings of finite sets. Matematičeskie zametki, Tome 34 (1983) no. 5, pp. 757-771. http://geodesic.mathdoc.fr/item/MZM_1983_34_5_a11/