%0 Journal Article %A V. P. Čistyakov %T Theorem on Sums of Independent Random Positive Variables and its Applications to Branching Processes %J Teoriâ veroâtnostej i ee primeneniâ %D 1964 %P 710-718 %V 9 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1964_9_4_a12/ %G ru %F TVP_1964_9_4_a12