%0 Journal Article %A Yu. P. Leonov %T Dynamical systems that are observable in experiments %J Doklady Akademii Nauk %D 1973 %P 562-565 %V 208 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_208_3_a17/ %G ru %F DAN_1973_208_3_a17