%0 Journal Article %A V. A. Vatutin %A E. E. D'yakonova %T Critical branching processes in random environment: the probability of extinction at a given moment %J Diskretnaya Matematika %D 1997 %P 100-126 %V 9 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DM_1997_9_4_a10/ %G ru %F DM_1997_9_4_a10