%0 Journal Article %A B. Grigelionis %T On Convergence of Sums of Step Stochastic Processes to a Poisson Process %J Teoriâ veroâtnostej i ee primeneniâ %D 1963 %P 189-194 %V 8 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1963_8_2_a5/ %G ru %F TVP_1963_8_2_a5