%0 Journal Article %A V. V. Ryzhikov %T Spectral multiplicities and asymptotic operator properties of actions with invariant measure %J Sbornik. Mathematics %D 2009 %P 1833-1845 %V 200 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2009_200_12_a4/ %G en %F SM_2009_200_12_a4