%0 Journal Article %A S. V. Nagaev %T On the speed of convergence in a~boundary problem.~I %J Teoriâ veroâtnostej i ee primeneniâ %D 1970 %P 179-199 %V 15 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1970_15_2_a1/ %G ru %F TVP_1970_15_2_a1