%0 Journal Article %A V. L. Kolyadin %A V. F. Kravchenko %T Statistically optimal solution of operator equations when the %J Doklady Akademii Nauk %D 1990 %P 532-535 %V 310 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1990_310_3_a3/ %G ru %F DAN_1990_310_3_a3