%0 Journal Article %A B. A. Sevast'yanov %T The Asymptotic Behaviour of the Probability that a~Critical Branching Process is Not Extinct %J Teoriâ veroâtnostej i ee primeneniâ %D 1967 %P 179-183 %V 12 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1967_12_1_a20/ %G ru %F TVP_1967_12_1_a20