%0 Journal Article %A I. A. Ibragimov %A N. V. Smorodina %A M. M. Faddeev %T Approximation of the evolution operator by expectations of %J Teoriâ veroâtnostej i ee primeneniâ %D 2019 %P 17-35 %V 64 %N 1 %U http://geodesic.mathdoc.fr/item/TVP_2019_64_1_a1/ %G ru %F TVP_2019_64_1_a1