%0 Journal Article %A L. A. Pokrovskii %T The use of unbalanced statistical operator in the theory of energy exchange between two subsystems %J Doklady Akademii Nauk %D 1968 %P 317-319 %V 182 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1968_182_2_a22/ %G ru %F DAN_1968_182_2_a22