%0 Journal Article %A V. S. Pugachev %T Recursive estimation of variables and parameters in stochastic systems described by difference equations %J Doklady Akademii Nauk %D 1978 %P 1131-1133 %V 243 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1978_243_5_a9/ %G ru %F DAN_1978_243_5_a9