%0 Journal Article %A S. M. Frolovichev %T An Analog of Andre's Re ection Principle for Diffusion Processes with a Small Parameter %J Differencialʹnye uravneniâ %D 2001 %P 800-808 %V 37 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2001_37_6_a10/ %G ru %F DE_2001_37_6_a10