%0 Journal Article %A D. N. Zubarev %T Stationary operator for non-stationary processes %J Doklady Akademii Nauk %D 1965 %P 537-540 %V 164 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_164_3_a15/ %G ru %F DAN_1965_164_3_a15