%0 Journal Article %A A. M. Vershik %T Nonfree actions of countable groups and their characters %J Zapiski Nauchnykh Seminarov POMI %D 2010 %P 5-16 %V 378 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2010_378_a0/ %G ru %F ZNSL_2010_378_a0