%0 Journal Article
%A V. I. Afanasyev
%T Mean value of a function of a random walk up to the time of the first passage to the semiaxis
%J Matematičeskie zametki
%D 1987
%P 895-901
%V 42
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1987_42_6_a12/
%G ru
%F MZM_1987_42_6_a12