TY  - JOUR
AU  - V. I. Afanasyev
TI  - Mean value of a function of a random walk up to the time of the first passage to the semiaxis
JO  - Matematičeskie zametki
PY  - 1987
SP  - 895
EP  - 901
VL  - 42
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1987_42_6_a12/
LA  - ru
ID  - MZM_1987_42_6_a12
ER  -