%0 Journal Article
%A D. Blackwell
%T The entropy of functions of finite-state Markov chains
%J Matematika
%D 1959
%P 143-150
%V 3
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAT_1959_3_5_a6/
%G ru
%F MAT_1959_3_5_a6