%0 Journal Article
%A M. Courbage
%A B. Kamiński
%T On the directional entropy of ${\Bbb Z}^2$-actions
 generated by cellular automata
%J Studia Mathematica
%D 2002
%P 285-295
%V 153
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/sm153-3-5/
%R 10.4064/sm153-3-5
%G en
%F 10_4064_sm153_3_5