%0 Journal Article %A A. M. Vershik %T Nonmeasurable decompositions, orbit theory, algebras of operators %J Doklady Akademii Nauk %D 1971 %P 1004-1007 %V 199 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1971_199_5_a4/ %G ru %F DAN_1971_199_5_a4