%0 Journal Article %A V. A. Ryasin %T An optimal impulse control problem with incomplete data %J Teoriâ veroâtnostej i ee primeneniâ %D 1975 %P 515-526 %V 20 %N 3 %U http://geodesic.mathdoc.fr/item/TVP_1975_20_3_a2/ %G ru %F TVP_1975_20_3_a2