%0 Journal Article %A M. I. Freidlin %T On small perturbations of coefficients of a~diffusion process %J Teoriâ veroâtnostej i ee primeneniâ %D 1967 %P 536-540 %V 12 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1967_12_3_a11/ %G ru %F TVP_1967_12_3_a11