%0 Journal Article %A V. P. Čistyakov %T Asymptotic behaviour of the non-extinction probability for a~critical Branching process %J Teoriâ veroâtnostej i ee primeneniâ %D 1971 %P 638-648 %V 16 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1971_16_4_a2/ %G ru %F TVP_1971_16_4_a2