%0 Journal Article %A V. S. Pugachev %T Normal stochastic systems %J Doklady Akademii Nauk %D 1973 %P 566-569 %V 208 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_208_3_a18/ %G ru %F DAN_1973_208_3_a18