%0 Journal Article
%A B. M. Gurevich
%T Topological entropy of a countable Markov chain
%J Doklady Akademii Nauk
%D 1969
%P 715-718
%V 187
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1969_187_4_a1/
%G ru
%F DAN_1969_187_4_a1