%0 Journal Article
%A V. V. Ryzhikov
%T An estimate of the entropy of a class of $Z^2$-actions
%J Matematičeskie zametki
%D 1992
%P 152-155
%V 51
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1992_51_2_a22/
%G ru
%F MZM_1992_51_2_a22