%0 Journal Article %A B. A. Sevast'yanov %T Necessary condition for the regularity of branching processes %J Matematičeskie zametki %D 1970 %P 389-396 %V 7 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1970_7_4_a2/ %G ru %F MZM_1970_7_4_a2