%0 Journal Article
%A A. M. Vershik
%A I. P. Kornfeld
%T General ergodic theory of transformation groups with invariant measure. Chapter~4. Periodic approximations and their applications. Ergodic theorems, spectral and entropy theory for general group actions
%J Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Fundamental'nye Napravleniya 
%D 1985
%P 70-89
%V 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/INTF_1985_2_a4/
%G ru
%F INTF_1985_2_a4