%0 Journal Article
%A R. I. Grigorchuk
%T An Ergodic Theorem for the Action of a~Free Semigroup
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 2000
%P 119-133
%V 231
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TM_2000_231_a4/
%G ru
%F TM_2000_231_a4