%0 Journal Article %A A. A. Novikov %T On the first exit time of an autoregressive process beyond a level and an application to the ``change-point'' problem %J Teoriâ veroâtnostej i ee primeneniâ %D 1990 %P 282-292 %V 35 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1990_35_2_a6/ %G ru %F TVP_1990_35_2_a6